E21B10/086 - CPC Classification Index

ClassID:

135208 ⎘

E21B10/086 - CPC Classification

Classification description:

Drill bits; Roller bits with excentric movement

Recent Application in this class:

20210017814

2021-01-21

Slide reamer and stabilizer tool

20190226284

2019-07-25

Slide reamer and stabilizer tool

20180298697

2018-10-18

Bi-Axial Drill Bits and Bit Adaptors

20180119495

2018-05-03

Slide reamer and stabilizer tool

20160053548

2016-02-25

Slide reamer and stabilizer tool

20120279784

2012-11-08

Slide reamer and stabilizer tool

20120145465

2012-06-14

DRILL BIT

20110061940

2011-03-17

Conformal bearing for rock drill bit

20100132510

2010-06-03

TWO-CONE DRILL BIT

#10

20090283332

2009-11-19

Conformal bearing for rock drill bit

#11

20080099252

2008-05-01

Two-cone drill bit with enhanced stability

#12

20080047758

2008-02-28

Device for drilling a bore in the ground

#13

20060243452

2006-11-02

System for lining a section of a wellbore

#14

20060096784

2006-05-11

Device for advancing drillings in the ground

#15

20060054361

2006-03-16

Two-cone drill bit with enhanced stability

#16

20060054357

2006-03-16

Two-cone drill bit