Llewellyn A. Rubin

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Westlake Village, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Toroidal coupled telemetry apparatus
- Patent number 4,725,837
- Issue date Feb 16, 1988
- Tele-Drill, Inc.
- Llewellyn A. Rubin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole telemetry apparatus and method
- Patent number 4,691,203
- Issue date Sep 1, 1987
- Llewellyn A. Rubin
- E21 - EARTH DRILLING MINING