Patents-Review.com
ClassID:

135150 ⎘

E21B7/003 - CPC Classification

Classification description:

Special methods or apparatus for drilling Drilling with mechanical conveying means

Sub-classes:
Recent Application in this class:
#1
20250043636
2025-02-06

DRILLING TOOL AND METHOD FOR PRODUCING A BORE IN THE GROUND

 #2
20240254838
2024-08-01

BASEMENT ROCK HYBRID DRILLING

 #3
20230243216
2023-08-03

Basement rock hybrid drilling

 #4
20220136334
2022-05-05

Basement rock hybrid drilling

 #5
20220136333
2022-05-05

Basement rock hybrid drilling

 #6
20220136332
2022-05-05

Basement rock hybrid drilling

 #7
20220098967
2022-03-31

Excavating machine with control system of the combined drive of two winches

 #8
20210123305
2021-04-29

Combined Bucket Drill and Soil Screen Apparatus and Method for Archaeological Excavations

 #9
20200318450
2020-10-08

Drilling bucket and method for producing a bore in the ground

 #10
20190390519
2019-12-26

Rotary drilling tool and method for producing a bore in the ground

 #11
20190169957
2019-06-06

Installation Of Ground Loops For Geothermal Heating And/Or Cooling Applications

 #12
20160251899
2016-09-01

Axially separating drill bucket

 #13
20140262522
2014-09-18

Axially separating drill bucket

 #14
20140034385
2014-02-06

Drilling bucket and method for drilling a bore hole

 #15
20120006559
2012-01-12

SUBMERGIBLE OIL WELL SEALING DEVICE WITH VALVES AND METHOD FOR INSTALLING A SUBMERGIBLE OIL WELL SEALING DEVICE AND RESUMING OIL PRODUCTION

 #16
20120006558
2012-01-12

Submergible oil well sealing device and method for sealing underwater oil wells

 #17
19018097
2025-09-09

Full-face shaft boring machine, boring system, and boring method

 #18
18399699
2024-07-16

Auger-suction type metro jet system (MJS) device for aerated and lightweight cement soil and construction method thereof