Bobby L. Douglas

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Oil well pumpoff control system
- Patent number 3,938,910
- Issue date Feb 17, 1976
- Dresser Industries, Inc.
- Bobby L. Douglas
- E21 - EARTH DRILLING MINING
Information Patent Grant
Oil well pumpoff control system
- Patent number 3,936,231
- Issue date Feb 3, 1976
- Dresser Industries, Inc.
- Bobby L. Douglas
- E21 - EARTH DRILLING MINING
Information Patent Grant
Oil well pumpoff control system utilizing integration timer
- Patent number 3,930,752
- Issue date Jan 6, 1976
- Dresser Industries, Inc.
- Bobby L. Douglas
- E21 - EARTH DRILLING MINING