Coalex, Inc.

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Woodland, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Remote controlled high wall coal mining system
- Patent number 4,323,280
- Issue date Apr 6, 1982
- Coalex, Inc.
- John B. Lansberry
- E21 - EARTH DRILLING MINING
Information Patent Grant
Televised remote control system of a continuous mining machine
- Patent number 4,281,876
- Issue date Aug 4, 1981
- Coalex, Inc.
- John B. Lansberry
- E21 - EARTH DRILLING MINING