Robert Harold Trent

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Longmont, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of recovering hydrocarbon using mining assisted methods
- Patent number 4,607,888
- Issue date Aug 26, 1986
- New Tech Oil, Inc.
- Robert H. Trent
- E21 - EARTH DRILLING MINING
Information Patent Grant
Longwall mining of trona with prefracturing to prevent slabbing
- Patent number 4,017,121
- Issue date Apr 12, 1977
- Allied Chemical Corporation
- Robert Harold Trent
- E21 - EARTH DRILLING MINING