Roddie R. Smith

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Plano, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Streamlined flapper valve
- Patent number 5,323,859
- Issue date Jun 28, 1994
- Halliburton Company
- Roddie R. Smith
- E21 - EARTH DRILLING MINING
Information Patent Grant
Metal to metal seal for well safety valve
- Patent number 5,284,205
- Issue date Feb 8, 1994
- Halliburton Company
- Roddie R. Smith
- E21 - EARTH DRILLING MINING
Information Patent Grant
Streamlined flapper valve
- Patent number 5,137,089
- Issue date Aug 11, 1992
- Otis Engineering Corporation
- Roddie R. Smith
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for producing wells
- Patent number 5,044,443
- Issue date Sep 3, 1991
- Otis Engineering Corporation
- Ronald K. Churchman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Surface controlled subsurface safety valve
- Patent number 4,945,993
- Issue date Aug 7, 1990
- Otis Engineering Corporation
- Rennie L. Dickson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Surface controlled subsurface safety valve
- Patent number 4,723,606
- Issue date Feb 9, 1988
- Otis Engineering Corporation
- Michael B. Vinzant
- E21 - EARTH DRILLING MINING
Information Patent Grant
Subsurface safety valve with lock-open system
- Patent number 4,624,315
- Issue date Nov 25, 1986
- Otis Engineering Corporation
- Rennie L. Dickson
- E21 - EARTH DRILLING MINING