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structurally associated with rock crushers
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CPC
E21D9/0657
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Parent Industries
E
FIXED CONSTRUCTIONS
E21
Mining
E21D
SHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS
E21D9/00
Tunnels or galleries, with or without linings Methods or apparatus for making thereof Layout of tunnels or galleries
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E21D9/0657
structurally associated with rock crushers
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Patents Grants
last 30 patents
Information
Patent Grant
Tunnel boring machine with crusher
Patent number
6,017,095
Issue date
Jan 25, 2000
Tony DiMillo
E21 - EARTH DRILLING MINING
Information
Patent Grant
Tunneling machine with center cutter and debris removing means
Patent number
5,437,500
Issue date
Aug 1, 1995
Herrenknecht GmbH
Gebhard Lehmann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Shield tunneling machine
Patent number
5,393,172
Issue date
Feb 28, 1995
Kabushiki Kaisha Iseki Kaihatsu Koki
Toshio Akesaka
E21 - EARTH DRILLING MINING
Information
Patent Grant
Shield tunnelling machine
Patent number
5,123,708
Issue date
Jun 23, 1992
Kabushiki Kaisha Iseki Kaihatsu Koki
Toshio Akesaka
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method for boring hole in the ground and apparatus therefor
Patent number
5,078,545
Issue date
Jan 7, 1992
Kabushiki Kaisha Iseki Kaihatsu Koki
Toshio Akesaka
E21 - EARTH DRILLING MINING
Information
Patent Grant
Shield type tunneling apparatus
Patent number
4,818,026
Issue date
Apr 4, 1989
Kabushiki Kaisha Komatsu Seisakusho
Toshihiro Yamazaki
E21 - EARTH DRILLING MINING
Information
Patent Grant
Shield tunneling machine
Patent number
4,655,493
Issue date
Apr 7, 1987
Kabushiki Kaisha Iseki Kaihatsu Koki
Toshio Sumi
E21 - EARTH DRILLING MINING
Information
Patent Grant
Shield tunneling machine
Patent number
4,630,869
Issue date
Dec 23, 1986
Kabushiki Kaisha Iseki Kaihatsu Koki
Toshio Akesaka
E21 - EARTH DRILLING MINING
Information
Patent Grant
Excavating and propelling machine for laying pipelines underground
Patent number
4,534,676
Issue date
Aug 13, 1985
Kabushiki Kaisha Komatsu Seisakusho
Hiroshi Saito
E21 - EARTH DRILLING MINING
Information
Patent Grant
Shield tunneling method and machine therefor
Patent number
4,406,498
Issue date
Sep 27, 1983
Kabushiki Kaisha Iseki Kaihatsu Koki
Toshio Akesaka
E21 - EARTH DRILLING MINING
Information
Patent Grant
Hydraulic mining apparatus and method
Patent number
4,061,398
Issue date
Dec 6, 1977
Kaiser Resources Ltd.
David M. Parkes
E21 - EARTH DRILLING MINING
Information
Patent Grant
3350889
Patent number
3,350,889
Issue date
Nov 7, 1967
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents