Canterbury; Robert Houston
Patent Applications and Registrations
Patent applications and USPTO patent grants for Canterbury; Robert Houston.The latest application filed is for "pressure-balanced well service valve".
- Canterbury; Robert Houston - Hobbs NM
| Patent | Date |
|---|---|
| Pressure-balanced well service valve Grant 4,063,594 - Canterbury * December 20, 1 | 1977-12-20 |
| Pressure-balanced well service valve Grant 3,987,848 - Canterbury October 26, 1 | 1976-10-26 |
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