comprising two walking elements

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Patents Grantslast 30 patents

Information Patent Grant
Continuous sliding support gantry for a large passage
- Patent number 4,358,224
- Issue date Nov 9, 1982
- Charbonnages de France
- Guy Blanpain
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sliding supporting gallery
- Patent number 4,348,138
- Issue date Sep 7, 1982
- Charbonnages de France
- Guy Blampain
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine roof support
- Patent number 4,311,417
- Issue date Jan 19, 1982
- Fletcher Sutcliffe Wild Limited
- Lewis R. B. Bower
- E21 - EARTH DRILLING MINING
Information Patent Grant
Walking mine roof support
- Patent number 4,140,430
- Issue date Feb 20, 1979
- Bochumer Eisenhutte Heintzmann GmbH & Co
- Gunter Blumenthal
- E21 - EARTH DRILLING MINING
Information Patent Grant
Guiding arrangement for underground excavating systems
- Patent number 4,065,931
- Issue date Jan 3, 1978
- Bochumer Eisenhutte Heintzmann GmbH & Co.
- Gustav Neu
- E21 - EARTH DRILLING MINING
Information Patent Grant
3530490
- Patent number 3,530,490
- Issue date Sep 22, 1970
- E21 - EARTH DRILLING MINING
Information Patent Grant
3342034
- Patent number 3,342,034
- Issue date Sep 19, 1967
- E21 - EARTH DRILLING MINING
Information Patent Grant
3270510
- Patent number 3,270,510
- Issue date Sep 6, 1966
- E21 - EARTH DRILLING MINING