ClassID:

148010

F16C2352/00 - CPC Classification

Classification description:

Apparatus for drilling

Recent Application in this class:
#1
20260139709
2026-05-21

FORCE COUPLING ASSEMBLIES AND RELATED SYSTEMS AND METHODS

#2
20260132817
2026-05-14

BEARINGS HAVING ASYMMETRICAL RECESSES

#3
20260028901
2026-01-29

Method of Grounding a Perforating Gun Assembly

#4
20250313514
2025-10-09

POLYCRYSTALLINE DIAMOND COMPACTS

#5
20250271028
2025-08-28

BEARING ASSEMBLIES, APPARATUSES, AND METHODS INCLUDING BEARING ELEMENTS

#6
20250263980
2025-08-21

BEARING ASSEMBLIES, APPARATUSES, AND METHODS INCLUDING BEARING ELEMENTS

#7
20250215751
2025-07-03

BEARING ASSEMBLY WITH FLOW RESTRICTOR FOR A DUAL ROD DIRECTIONAL DRILLING APPARATUS AND METHOD OF USE

#8
20250180071
2025-06-05

BEARING ASSEMBLIES AND APPARATUSES AND RELATED METHODS

#9
20250180070
2025-06-05

POLYCRYSTALLINE DIAMOND BEARINGS IN AN RCD

#10
20250179881
2025-06-05

OILFIELD RODS AND TUBULARS HAVING THERMOPLASTIC POLYURETHANE WEAR BANDS

#11
20250034950
2025-01-30

GREASE WITH NANOPARTICLES FOR TRICONE BITS

#12
20250034949
2025-01-30

CONDUITS FOR FEEDING AIR TO SMALL BEARINGS OF JOURNAL AREA OF ROTARY DRILL BIT

#13
20250020164
2025-01-16

CORROSION RESISTANT BEARING ELEMENTS, BEARING ASSEMBLIES, BEARING APPARATUSES, AND MOTOR ASSEMBLIES USING THE SAME

#14
20240410232
2024-12-12

POLYCRYSTALLINE DIAMOND COMPACT

#15
20240360868
2024-10-31

BEARING ASSEMBLY FOR A DUAL ROD DIRECTIONAL DRILLING APPARATUS AND METHOD OF USE

#16
20240352834
2024-10-24

Roller Bearing Assembly, and Method of Grounding a Perforating Gun Assembly

#17
20240318505
2024-09-26

Bearing assemblies, apparatuses, and methods including bearing elements

#18
20240191751
2024-06-13

Bearing assemblies, apparatuses, and methods including bearing elements

#19
20240175465
2024-05-30

Rotor bearing design for downhole motors

#20
20240159268
2024-05-16

METHODS OF MANUFACTURING COMBINATION THRUST-BEARING AND RADIAL BEARING APPARATUSES

#21
20240084700
2024-03-14

CUTTING-RING ASSEMBLY

#22
20230304363
2023-09-28

COATINGS FOR WEAR SURFACES AND RELATED APPARATUSES, DEVICES, SYSTEMS, AND METHODS

#23
20230296134
2023-09-21

Corrosion resistant bearing elements, bearing assemblies, bearing apparatuses, and motor assemblies using the same

#24
20230287933
2023-09-14

Rolling bearing comprising at least a sensorized axial rolling element, machine comprising said bearing a process for controlling said machine

#25
20230250694
2023-08-10

Bearing assemblies, apparatuses, and methods including bearing elements

#26
20230235786
2023-07-27

Bearing assemblies, apparatuses, and methods including bearing elements

#27
20230220731
2023-07-13

Thrust bearing

#28
20230112084
2023-04-13

BEARING ASSEMBLIES, BEARING APPARATUSES, AND RELATED METHODS

#29
20230100593
2023-03-30

Bearing assemblies and apparatuses and related methods

#30
20230078021
2023-03-16

Methods of manufacturing combination thrust-bearing and radial bearing apparatuses

#31
20230072404
2023-03-09

Roller cutting tool with improved sealing

#32
20230052737
2023-02-16

FORCE COUPLING ASSEMBLIES AND RELATED SYSTEMS AND METHODS

#33
20230016216
2023-01-19

NON-METALLIC WEAR BANDS FOR OILFIELD RODS AND TUBULARS, AND METHODS OF FORMING SAME

#34
20220373020
2022-11-24

Bearing assembly

#35
20220364595
2022-11-17

Bearing assemblies, apparatuses, and methods including bearing elements

#36
20220364418
2022-11-17

Bearing assemblies, apparatuses, and methods including bearing elements

#37
20220252103
2022-08-11

Cutting-ring assembly

#38
20220220999
2022-07-14

Guiding member, mechanical system comprising such a guiding member, and method for producing such a guiding member

#39
20220213926
2022-07-07

Bearing assemblies, related bearing apparatuses and related methods

#40
20220105618
2022-04-07

Bearing Flange for a Drive System of a Hand-Held Power Tool, and Hammer Drill Having an Impact Mechanism and a Bearing Flange

#41
20220056955
2022-02-24

BEARING ELEMENTS AND APPARATUS INCLUDING SAME

#42
20220042542
2022-02-10

Stacked thrust tapered dissimilar series roller bearing

#43
20220018386
2022-01-20

Integrated retaining ring and bushing

#44
20210381549
2021-12-09

Bearing assemblies, related bearing apparatuses, and related methods

#45
20210363830
2021-11-25

Isolated lubrication system for drill bits

#46
20210355991
2021-11-18

BEARING APPARATUS

#47
20210332645
2021-10-28

Radial bearing apparatus for use with side forces

#48
20210285489
2021-09-16

Compliant bearing for oilfield applications

#49
20210262295
2021-08-26

Polycrystalline diamond compact

#50
20210246942
2021-08-12

Rolling bearing with spring biased thrust ring, and method for measuring an axial clearance of a rolling bearing having a thrust ring

#51
20210246941
2021-08-12

Rolling bearing, in particular, a large-diameter rolling bearing

#52
20210239159
2021-08-05

Assemblies and apparatuses including superhard elements

#53
20210172287
2021-06-10

Tool for opening sliding sleeve

#54
20210131488
2021-05-06

Corrosion resistant bearing elements, bearing assemblies, bearing apparatuses, and motor assemblies using the same

#55
20210108678
2021-04-15

Bearing assemblies, related bearing apparatuses and related methods

#56
20210002967
2021-01-07

DOWNHOLE ROLLER

#57
20200347883
2020-11-05

Rolling bearing comprising three concentric rings

#58
20200347877
2020-11-05

Tilting pad bearing assemblies, and bearing apparatuses and methods of using the same

#59
20200346292
2020-11-05

Carbide wear surface and method of manufacture

#60
20200331811
2020-10-22

Polycrystalline diamond compacts

#61
20200300293
2020-09-24

Self-aligning bearing assembly for downhole tools

#62
20200256379
2020-08-13

Methods of manufacturing combination thrust-bearing and radial bearing apparatuses

#63
20200256133
2020-08-13

SUPERABRASIVE COMPACTS, METHODS OF MAKING THE SAME, AND APPARATUSES USING THE SAME

#64
20200248743
2020-08-06

Bearing apparatus including tilting pads

#65
20200217138
2020-07-09

Compound angle bearing assembly

#66
20200191201
2020-06-18

Bearing assemblies and apparatuses including superhard bearing elements

#67
20200190910
2020-06-18

Method of forming a journal for a roller cone drill bit

#68
20200181979
2020-06-11

Radial bearing apparatus for use with side forces

#69
20200173495
2020-06-04

Bearing assemblies including at least one superhard bearing element having selected surface characteristics and methods of manufacture

#70
20200165872
2020-05-28

Downhole motor bearing pack

#71
20200149584
2020-05-14

Tilting pad bearing assemblies; bearing apparatuses and methods of using the same

#72
20200141189
2020-05-07

Polycrystalline diamond compact

#73
20200141186
2020-05-07

Mud-lubricated bearing assembly with lower seal

#74
20200130141
2020-04-30

POLYCRYSTALLINE DIAMOND, POLYCRYSTALLINE DIAMOND COMPACTS, METHODS OF MAKING SAME, AND APPLICATIONS

#75
20200114446
2020-04-16

Apparatuses and methods for induction heating

#76
20200087991
2020-03-19

Bearing assemblies, related bearing apparatuses, and related methods

#77
20200063791
2020-02-27

Tilting pad bearing assemblies, and bearing apparatuses and methods of using the same

#78
20200056428
2020-02-20

Mud motors with thrust bearing with enhanced torque

#79
20200011374
2020-01-09

Corrosion resistant bearing elements, bearing assemblies, bearing apparatuses, and motor assemblies using the same

#80
20190360527
2019-11-28

Bearing assemblies including thick superhard tables and/or selected exposures, bearing apparatuses, and methods of use

#81
20190352966
2019-11-21

Radial bearing with wear resistant inserts and a wear resistant coating

#82
20190316630
2019-10-17

Asymmetric bearing for riser tensioner system

#83
20190301523
2019-10-03

BEARING DESIGN WITH COMBINED ROLLING ELEMENT MATERIAL

#84
20190257358
2019-08-22

Spherical bearing insert rotary bearing and method of manufacture

#85
20190234456
2019-08-01

Tilting pad bearing assemblies; bearing apparatuses and methods of using the same

#86
20190218861
2019-07-18

Coated surfaces for bearings used in drilling motors

#87
20190211629
2019-07-11

Polycrystalline diamond compact

#88
20190203535
2019-07-04

Wellbore rig top drive

#89
20190195279
2019-06-27

Compact bearing assemblies including superhard bearing surfaces, bearing apparatuses, and methods of use

#90
20190170186
2019-06-06

BEARING APPARATUS INCLUDING A BEARING ASSEMBLY HAVING A CONTINUOUS BEARING ELEMENT AND A TILTING PAD BEARING ASSEMBLY

#91
20190154081
2019-05-23

Stabilizers and bearings for extreme wear applications

#92
20190136628
2019-05-09

Bearings for downhole drilling motors

#93
20190123609
2019-04-25

Electrical discharge prevention in bearing for submersible pump motor using a conductive spring between a sleeve and a carrier body

#94
20190085669
2019-03-21

Active magnetic bearing control for downhole-type system

#95
20190063495
2019-02-28

Bearing assemblies including at least one superhard bearing element having selected surface characteristics and methods of manufacture

#96
20190040691
2019-02-07

Earth-boring tools including rotatable bearing elements and related methods

#97
20190010985
2019-01-10

Segmented cage for rolling bearing

#98
20180372157
2018-12-27

Microfluidic-assisted hydrodynamic lubrication system and method

#99
20180372155
2018-12-27

Additively manufactured components for downhole operations

#100
20180371838
2018-12-27

Pressure system for bearing assembly and method of use

#101
20180355914
2018-12-13

Dental hand piece or angle piece with a rotating tool

#102
20180335084
2018-11-22

Asymmetrical radial bearing

#103
20180328405
2018-11-15

Multi-row ball bearing

#104
20180328403
2018-11-15

Bearing apparatus including tilting pads

#105
20180320740
2018-11-08

Systems and devices using hard bearings

#106
20180266485
2018-09-20

Rotation unit and method of adjusting bearing clearance

#107
20180266480
2018-09-20

Hard bearing attachment and alignment systems, apparatus, and techniques

#108
20180230749
2018-08-16

On-bottom downhole bearing assembly

#109
20180216661
2018-08-02

Tilting pad bearing assemblies; bearing apparatuses and methods of using the same

#110
20180209476
2018-07-26

Tilting pad bearing assemblies, and bearing apparatuses and methods of using the same

#111
20180195347
2018-07-12

ROLLER CONE DRILL BIT JOURNAL WITH ASYMMETRIC BALL RACE AND EXTENDED FRICTION RACE

#112
20180187491
2018-07-05

Mud motors with thrust bearing with enhanced torque

#113
20180179114
2018-06-28

Polycrystalline diamond compacts

#114
20180142535
2018-05-24

Electrical conveyance for downhole tools

#115
20180133673
2018-05-17

METHODS FOR FORMING POLYCRYSTALLINE MATERIALS INCLUDING PROVIDING MATERIAL WITH SUPERABRASIVE GRAINS PRIOR TO HPHT PROCESSING

#116
20180128051
2018-05-10

Radial ball bearing and method

#117
20180119733
2018-05-03

Thrust bearing alignment

#118
20180112465
2018-04-26

Compound angle bearing assembly

#119
20180045245
2018-02-15

Methods utilizing a bearing assembly having enhanced selected support for nonuniform loads

#120
20180044997
2018-02-15

Driveshaft catch assembly with pressure plugs

#121
20180031034
2018-02-01

Combination bearing

#122
20180010635
2018-01-11

Walking rig creeper interface

#123
20170350446
2017-12-07

Drill drive for a drilling rig

#124
20170314617
2017-11-02

Bearing assemblies including thick superhard tables and/or selected exposures, bearing apparatuses, and methods of use

#125
20170284469
2017-10-05

Bearing arrangement for a deep drilling device

#126
20170276171
2017-09-28

Methods of manufacturing combination thrust-bearing and radial bearing apparatuses

#127
20170261031
2017-09-14

Bearing apparatus including a bearing assembly having a continuous bearing element and a tilting pad bearing assembly

#128
20170260814
2017-09-14

Driveshaft clamping assembly

#129
20170254358
2017-09-07

Bearing apparatus including tilting pads

#130
20170247949
2017-08-31

Cutting elements, bearings, and earth-boring tools including multiple substrates attached to one another

#131
20170241209
2017-08-24

Bearings for downhole tools, downhole tools incorporating such bearings, and related methods

#132
20170241208
2017-08-24

Bearings for downhole tools, downhole tools incorporating such bearings, and related methods

#133
20170167221
2017-06-15

Rotating control device having a partition seal assembly

#134
20170151692
2017-06-01

Drive shaft with insertion device for guiding cooling water

#135
20170146060
2017-05-25

Bearing assemblies, apparatuses, and related methods of manufacture

#136
20170108040
2017-04-20

Bearing assemblies and apparatuses including superhard bearing elements

#137
20170108039
2017-04-20

Systems and devices using hard bearings

#138
20170097044
2017-04-06

Bearing elements, bearing apparatuses including same, and related methods

#139
20170082148
2017-03-23

Bearing in which one ring is equipped with strips for retaining a coded ribbon

#140
20170074324
2017-03-16

Spherical bearing insert rotary bearing and method of manufacture

#141
20170058606
2017-03-02

Driveshaft catch assembly

#142
20170051786
2017-02-23

Roller bearing comprising oblique contact rollers

#143
20170051562
2017-02-23

Resettable downhole torque limiter and related methods of use

#144
20170023064
2017-01-26

Segmented cage for a bearing

#145
20170009808
2017-01-12

Systems including bearing assembly having enhanced selected support for nonuniform loads

#146
20160369840
2016-12-22

Bearing assemblies including a thermally conductive structure, bearing apparatuses, and methods of use

#147
20160355440
2016-12-08

Polycrystalline diamond compacts

#148
20160327088
2016-11-10

Compact bearing assemblies including superhard bearing surfaces, bearing apparatuses, and methods of use

#149
20160326811
2016-11-10

Constant velocity joint apparatus, systems, and methods

#150
20160312535
2016-10-27

Offset shaft bearing assembly

#151
20160312534
2016-10-27

Downhole mud motor with a sealed bearing pack

#152
20160298682
2016-10-13

Bearing assemblies and apparatuses including superhard bearing elements

#153
20160290045
2016-10-06

Top drive for a drill string

#154
20160258220
2016-09-08

Compensator clip ring retainer cap for a roller cone drill bit

#155
20160245021
2016-08-25

Bearing section of a downhole drilling motor

#156
20160230471
2016-08-11

POLYCRYSTALLINE DIAMOND COMPACTS WITH PARTITIONED SUBSTRATE, POLYCRYSTALLINE DIAMOND TABLE, OR BOTH

#157
20160207169
2016-07-21

Polycrystalline diamond, polycrystalline diamond compacts, methods of making same, and applications

#158
20160158918
2016-06-09

Carbonate-catalyzed polycrystalline diamond elements, methods of manufacturing the same, and applications therefor

#159
20160108675
2016-04-21

Bearing assembly for a drilling tool

#160
20160069137
2016-03-10

Apparatus with a rotary seal assembly axially coincident with a shaft tilting focal point

#161
20160032962
2016-02-04

Bearing assembly

#162
20160016244
2016-01-21

Carbide wear surface and method of manufacture

#163
20150345557
2015-12-03

Combination thrust-bearing and radial bearing apparatuses

#164
20150345548
2015-12-03

Bearing assemblies and apparatuses including superhard bearing elements

#165
20150204380
2015-07-23

Bearing assemblies including a thermally conductive structure, bearing apparatuses, and methods of use

#166
20150190901
2015-07-09

Polycrystalline diamond compacts

#167
20150167732
2015-06-18

Bearing assemblies, and related methods

#168
20150152914
2015-06-04

Bearing assemblies including enhanced selected support for nonuniform loads, bearing apparatuses, and methods of use

#169
20150144404
2015-05-28

Bearing assemblies and apparatuses including tilting superhard bearing elements, and motor assemblies using the same

#170
20150111793
2015-04-23

Cu—Ni—Sn alloy overlay for bearing surfaces on oilfield equipment

#171
20140376847
2014-12-25

Bearing assembly for rock drill

#172
20140367177
2014-12-18

Polycrystalline diamond compacts with partitioned substrate, polycrystalline diamond table, or both

#173
20140367176
2014-12-18

Polycrystalline diamond compacts with partitioned substrate, polycrystalline diamond table, or both

#174
20140355914
2014-12-04

Bearing apparatuses including tilting pads and methods of operating such bearing apparatuses

#175
20140348452
2014-11-27

Bearing assemblies including thick superhard tables and/or selected exposures, bearing apparatuses, and methods of use

#176
20140345141
2014-11-27

Bearing assemblies including a thermally conductive structure, bearing apparatuses, and methods of use

#177
20140341487
2014-11-20

Bearing elements, bearing apparatuses including same, and related methods

#178
20140314355
2014-10-23

Bearing assembly including bearing support ring configured to reduce thermal warping during use

#179
20140301679
2014-10-09

Downhole tools including bearings and methods of forming same

#180
20140254967
2014-09-11

Bearing apparatuses including dual material bearing surfaces

#181
20140241654
2014-08-28

Bearing apparatus having superhard bearing elements

#182
20140215926
2014-08-07

Polycrystalline diamond compacts including at least one transition layer and methods for stress management in polycrystalline diamond compacts

#183
20140185972
2014-07-03

Bearing assembly for a drilling tool

#184
20140116786
2014-05-01

Bearing assemblies, apparatuses, and motor assemblies using the same

#185
20140116780
2014-05-01

Hybrid bearings for downhole motors

#186
20140105739
2014-04-17

Bearing assemblies, and related methods

#187
20140102810
2014-04-17

Bearing assemblies and apparatuses including tilting superhard bearing elements, and motor assemblies using the same

#188
20140102790
2014-04-17

Methods and system for lubrication pressure relief for a roller cone drill bit

#189
20140072249
2014-03-13

Methods of operating bearing apparatuses

#190
20140060856
2014-03-06

Resettable downhole torque limiter and related methods of use

#191
20130343681
2013-12-26

Methods of operating a bearing apparatus including tilting pads

#192
20130299243
2013-11-14

Mud motor bearing assembly and method

#193
20130216173
2013-08-22

Spacer for rolling bearing with low friction contribution

#194
20130216172
2013-08-22

C-shaped spacer for rolling bearing

#195
20130205677
2013-08-15

Methods of fabricating a polycrystalline diamond compact

#196
20130182982
2013-07-18

CARBIDE WEAR SURFACE AND METHOD OF MANUFACTURE

#197
20130156357
2013-06-20

Bearing assemblies, apparatuses, and motor assemblies using the same

#198
20130146364
2013-06-13

Centraliser

#199
20130044971
2013-02-21

Bearing assemblies, apparatuses, and motor assemblies using the same

#200
20130043078
2013-02-21

Polycrystalline diamond compact including a carbonate-catalyzed polycrystalline diamond table and applications therefor

#201
20130037328
2013-02-14

BEARING ASSEMBLY INCLUDING AT LEAST ONE SUPERHARD BEARING ELEMENT HAVING AT LEAST ONE REGISTRATION FEATURE AND BEARING APPARATUS INCLUDING SAME

#202
20130016935
2013-01-17

Bearing assemblies

#203
20130015001
2013-01-17

Polycrystalline diamond compacts, method of fabricating same, and various applications

#204
20130014937
2013-01-17

Rotary table device for a pipe string

#205
20130004105
2013-01-03

Bearing assembly

#206
20120325561
2012-12-27

Housing, mandrel and bearing assembly for downhole drilling motor

#207
20120325560
2012-12-27

Bearing apparatuses, systems including same, and related methods

#208
20120321232
2012-12-20

Bearing elements, bearing apparatuses including same, and related methods

#209
20120288226
2012-11-15

Flow control through thrust bearing assembly

#210
20120285748
2012-11-15

Bearing assembly

#211
20120281938
2012-11-08

Tilting superhard bearing elements in bearing assemblies, apparatuses, and motor assemblies using the same

#212
20120275736
2012-11-01

Bearing assembly

#213
20120267172
2012-10-25

Methods for forming polycrystalline materials including providing material with superabrasive grains prior to HPHT processing

#214
20120261197
2012-10-18

Polycrystalline diamond compacts including at least one transition layer and methods for stress management in polycrsystalline diamond compacts

#215
20120255789
2012-10-11

Bearing assemblies, and bearing apparatuses and motor assemblies using same

#216
20120241226
2012-09-27

Polycrystalline diamond, polycrystalline diamond compacts, methods of making same, and applications

#217
20120241224
2012-09-27

Polycrystalline diamond compact including a carbonate-catalyzed polycrystalline diamond body and applications therefor

#218
20120225253
2012-09-06

Methods of forming polycrystalline elements and structures formed by such methods

#219
20120193151
2012-08-02

Method and apparatus for reducing lubricant pressure pulsation within a rotary cone rock bit

#220
20120181090
2012-07-19

Rotary drill bit including at least one superabrasive cutting element having a diamond-silicon carbide composite table

#221
20120114274
2012-05-10

Bearing assembly for a downhole motor

#222
20120080230
2012-04-05

Bearings for downhole tools, downhole tools incorporating such bearings, and methods of cooling such bearings

#223
20120057814
2012-03-08

Bearing elements, bearing assemblies and related methods

#224
20120047815
2012-03-01

Polycrystalline diamond compact

#225
20120039551
2012-02-16

Bearing assemblies, apparatuses, and related methods of manufacture

#226
20120037425
2012-02-16

Bearing assembly including bearing support ring configured to reduce thermal warping during use, bearing apparatuses using the same, and related methods

#227
20110308858
2011-12-22

Flex joint for downhole drilling applications

#228
20110299802
2011-12-08

FLUID-SUPPORTED THRUST BEARINGS

#229
20110297453
2011-12-08

Polycrystalline diamond compacts and related drill bits

#230
20110297449
2011-12-08

Tool with welded cemented metal carbide inserts welded to steel and/or cemented metal carbide

#231
20110258937
2011-10-27

Methods of fabricating a superabrasive compact including a diamond-silicon carbide composite table

#232
20110240313
2011-10-06

Resettable downhole torque limiter and related methods of use

#233
20110214871
2011-09-08

Flushing procedure for rotating control device

#234
20110192648
2011-08-11

Bearing assembly for downhole motor

#235
20110189468
2011-08-04

Polycrystalline diamond compact and method of fabricating same

#236
20110174547
2011-07-21

Bearing assemblies, and bearing apparatuses and motor assemblies using same

#237
20110174544
2011-07-21

Bearing assemblies, bearing apparatuses using the same, and related methods

#238
20110168451
2011-07-14

Boron Aluminum Magnesium Coating for Earth-Boring Bit

#239
20110168407
2011-07-14

Bearing contact pressure reduction in well tools

#240
20110131810
2011-06-09

Process for manufacturing a bearing

#241
20110120776
2011-05-26

Hydrodynamic bearing assemblies, and hydrodynamic bearing apparatuses and motor assemblies using same

#242
20110067929
2011-03-24

Polycrystalline diamond compacts, methods of making same, and applications therefor

#243
20110061940
2011-03-17

Conformal bearing for rock drill bit

#244
20110024198
2011-02-03

BEARING SYSTEMS CONTAINING DIAMOND ENHANCED MATERIALS AND DOWNHOLE APPLICATIONS FOR SAME

#245
20110017519
2011-01-27

Polycrystalline diamond compacts, method of fabricating same, and various applications

#246
20100326730
2010-12-30

Sealing system and bi-directional thrust bearing arrangement for a downhole motor

#247
20100316322
2010-12-16

Bearing assembly

#248
20100310855
2010-12-09

Polycrystalline diamond

#249
20100307070
2010-12-09

Method of fabricating polycrystalline diamond and a polycrystalline diamond compact

#250
20100307069
2010-12-09

Polycrystalline diamond compact

#251
20100288559
2010-11-18

Method and device for manufacturing a down hole motor radial bearing

#252
20100288558
2010-11-18

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