David W. King

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Fort Worth, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Wireline shifting tool apparatus and methods
- Patent number 4,124,070
- Issue date Nov 7, 1978
- Gearhart-Owen Industries, Inc.
- David W. King
- E21 - EARTH DRILLING MINING
Information Patent Grant
Wireline latching apparatus and method of use
- Patent number 4,116,274
- Issue date Sep 26, 1978
- Petro-Data C.A.
- E. Edward Rankin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for testing earth formations
- Patent number 4,108,243
- Issue date Aug 22, 1978
- Gearhart-Owen Industries, Inc.
- David W. King
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and methods for testing earth formations
- Patent number 4,094,359
- Issue date Jun 13, 1978
- Gearhart-Owen Industries, Inc.
- David W. King
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole signaling system
- Patent number 3,964,556
- Issue date Jun 22, 1976
- Gearhart-Owen Industries, Inc.
- Marvin Gearhart
- E21 - EARTH DRILLING MINING