Arthur W. T. Grimley

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Fernie, CA

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Patents Grantslast 30 patents

Information Patent Grant
Mining method and apparatus
- Patent number 4,155,595
- Issue date May 22, 1979
- Kaiser Resources, Ltd.
- Arthur W. T. Grimley
- E21 - EARTH DRILLING MINING
Information Patent Grant
Process for hydraulically mining coal employing a cutting monitor a...
- Patent number 4,094,549
- Issue date Jun 13, 1978
- Kaiser Resources Ltd.
- Kouichi Shoji
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for mining
- Patent number 4,079,999
- Issue date Mar 21, 1978
- Kaiser Resources Ltd.
- Arthur W. T. Grimley
- E21 - EARTH DRILLING MINING