David W. Fish

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Carrollton, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Screened well drainage pipe structure with sealed, variable length...
- Patent number 5,803,179
- Issue date Sep 8, 1998
- Halliburton Energy Services, Inc.
- Ralph H. Echols
- E21 - EARTH DRILLING MINING
Information Patent Grant
Side pocket mandrel
- Patent number RE32469
- Issue date Aug 11, 1987
- Otis Engineering Corporation
- David T. Merritt
- 166 - Wells
Information Patent Grant
Side pocket mandrel
- Patent number 4,416,330
- Issue date Nov 22, 1983
- Otis Engineering Corporation
- David T. Merritt
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cement retainer and setting tool assembly
- Patent number 4,349,071
- Issue date Sep 14, 1982
- Dresser Industries, Inc.
- David W. Fish
- E21 - EARTH DRILLING MINING