Clifford D. Dransfield

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Dallas, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for generating seismic waves
- Patent number 4,102,429
- Issue date Jul 25, 1978
- Atlantic Richfield Company
- Clifford D. Dransfield
- G01 - MEASURING TESTING
Information Patent Grant
Means for flexibly guiding the travel of an upwardly propelled weight
- Patent number 4,004,651
- Issue date Jan 25, 1977
- Atlantic Richfield Company
- Clifford D. Dransfield
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for generating seismic waves
- Patent number 3,958,661
- Issue date May 25, 1976
- Atlantic Richfield Company
- Clifford D. Dransfield
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for imparting a seismic pulse to the earth
- Patent number 3,951,229
- Issue date Apr 20, 1976
- Atlantic Richfield Company
- Clifford D. Dransfield
- G01 - MEASURING TESTING