John B. Riester

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Morgantown, WV, US

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Patents Grantslast 30 patents

Information Patent Grant
Steering apparatus for a tramming conveyor
- Patent number 4,773,520
- Issue date Sep 27, 1988
- Consolidation Coal Company
- Richard E. Doerr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Remotely sensing of excavation cavity during mining
- Patent number 4,708,395
- Issue date Nov 24, 1987
- Conoco Inc.
- Eston F. Petry
- E21 - EARTH DRILLING MINING