Clifford C. Bottoms

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McKinney, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Percussion drill string assembly
- Patent number 4,727,944
- Issue date Mar 1, 1988
- Clifford C. Bottoms
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pipe spinner assembly
- Patent number 4,649,778
- Issue date Mar 17, 1987
- Clifford C. Bottoms
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pipe spinner assembly
- Patent number 4,306,471
- Issue date Dec 22, 1981
- Clifford C. Bottoms
- E21 - EARTH DRILLING MINING