Robert Lee Roper

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Burleson, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Liner and reinforcing swage for conduit in a wellbore and method an...
- Patent number 3,948,321
- Issue date Apr 6, 1976
- Gearhart-Owen Industries, Inc.
- Harrold D. Owen
- E21 - EARTH DRILLING MINING