Trott; Doug
Patent Applications and Registrations
Patent applications and USPTO patent grants for Trott; Doug.The latest application filed is for "electro-hydraulic surface controlled subsurface safety valve actuator".
- Trott; Doug - Coweta OK
| Patent | Date |
|---|---|
| Electro-hydraulic surface controlled subsurface safety valve actuator Grant 6,269,874 - Rawson , et al. August 7, 2 | 2001-08-07 |
| Electric safety valve actuator Grant 6,253,843 - Rawson , et al. July 3, 2 | 2001-07-03 |
| Undulating transverse interface for curved flapper seal Grant 5,682,921 - Rawson , et al. November 4, 1 | 1997-11-04 |
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