Rock Bit Industries U.S.A., Inc.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Rock Bit Industries U.S.A., Inc..The latest application filed is for "rock bit cone lock and method".
- Rock Bit Industries U.S.A., Inc. - Fort Worth TX
| Patent | Date |
|---|---|
| Rock bit cone lock and method Grant 4,730,681 - Estes March 15, 1 | 1988-03-15 |
| Generally cylindrical rotary drill face seal having improved resistance to radial distortion Grant 4,519,614 - Garner May 28, 1 | 1985-05-28 |
| Rotary drill bit multiple seal assembly Grant 4,466,621 - Garner , et al. August 21, 1 | 1984-08-21 |
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