Chancey; Roger D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chancey; Roger D..The latest application filed is for "drill stem connection".
- Chancey; Roger D. - Humble TX
- Chancey; Roger D. - Houston TX
| Patent | Date |
|---|---|
| Drill stem connection Grant 7,210,710 - Williamson , et al. May 1, 2 | 2007-05-01 |
| Drill stem connection App 20050189147 - Williamson, Joseph Stephen ; et al. | 2005-09-01 |
| Shock absorber assembly Grant 4,439,167 - Bishop , et al. March 27, 1 | 1984-03-27 |
| Shock absorber assembly for absorbing shocks encountered by a drill string Grant 4,387,885 - Bishop , et al. June 14, 1 | 1983-06-14 |
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