E21D1/06 - CPC Classification Index

ClassID:

135942 ⎘

E21D1/06 - CPC Classification

Classification description:

Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters

Recent Application in this class:

20250198284

2025-06-19

DEVICE FOR SINKING A VERTICAL BOREHOLE

20240209699

2024-06-27

DRILL HEAD FOR CREATING A BOREHOLE IN THE GROUND

20240068308

2024-02-29

FULL-FACE SHAFT TUNNEL BORING MACHINE SYSTEM

20230147209

2023-05-11

Drill head and method for producing a vertical borehole in the ground

20200018163

2020-01-16

Shaft enlargement arrangement for a boring system

20180010392

2018-01-11

Shaft enlargement arrangement for a boring system

20160369629

2016-12-22

Center-pillared full-face shaft drilling machine

20160369566

2016-12-22

Vertical shaft drilling rig using novel drilling method

20160318710

2016-11-03

Method of forming a subterranean gas storage vessel

#10

20160130942

2016-05-12

Device for sinking a shaft and method for sinking a shaft

#11

20150174789

2015-06-25

Method for wire saw excavation

#12

20140374161

2014-12-25

DEVICE FOR ENLARGING CAISSON BASES

#13

20130277117

2013-10-24

Method for introducing a vertical shaft and shaft driving machine

#14

20120318581

2012-12-20

Forming a shaft for an underground mine

#15

20120200139

2012-08-09

Underground mining

#16

20110139511

2011-06-16

Method for introducing a vertical shaft and shaft driving machine