-
-
-
-
-
-
-
-
-
Mining machine and method
-
Patent number 6,857,705
-
Issue date Feb 22, 2005
-
Commonwealth Scientific and Industrial Research Organization
-
David William Hainsworth
-
E21 - EARTH DRILLING MINING
-
-
-
-
-
-
-
-
-
Steering of mining machines
-
Patent number 4,643,482
-
Issue date Feb 17, 1987
-
Coal Industry (Patents) Limited
-
John R. Wolfenden
-
E21 - EARTH DRILLING MINING
-
Mining equipment
-
Patent number 4,531,782
-
Issue date Jul 30, 1985
-
Coal Industry (Patents) Ltd.
-
John A. Ford
-
E21 - EARTH DRILLING MINING
-
-
-
-
Mining apparatus
-
Patent number 4,279,443
-
Issue date Jul 21, 1981
-
Taiheiyo Engineering
-
Ken Takahashi
-
E21 - EARTH DRILLING MINING
-
-
Coal-shale interface detector
-
Patent number 4,195,512
-
Issue date Apr 1, 1980
-
The United States of America as represented by the administrator of the Natio...
-
Harry Reid
-
E21 - EARTH DRILLING MINING
-
-
Cutting force sensor
-
Patent number 4,181,360
-
Issue date Jan 1, 1980
-
Coal Industry (Patents) Limited
-
Raymond G. Wilson
-
E21 - EARTH DRILLING MINING
-
Coal seam sensor
-
Patent number 4,143,552
-
Issue date Mar 13, 1979
-
General Electric Company
-
David E. Godfrey
-
E21 - EARTH DRILLING MINING
-
-
Steering of mining machines
-
Patent number 4,072,349
-
Issue date Feb 7, 1978
-
Coal Industry (Patents) Limited
-
Dennis Hartley
-
E21 - EARTH DRILLING MINING