Shields; Santos
Patent Applications and Registrations
Patent applications and USPTO patent grants for Shields; Santos.The latest application filed is for "earth boring bit with textured bearing surface".
- Shields; Santos - Arlington TX
| Patent | Date |
|---|---|
| Earth boring bit with textured bearing surface Grant 4,248,485 - White , et al. February 3, 1 | 1981-02-03 |
| Earth boring cutting element enhanced retention system Grant 4,176,725 - Shields December 4, 1 | 1979-12-04 |
| Sealing system for an earth boring cutter Grant 4,168,868 - Shields September 25, 1 | 1979-09-25 |
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