Plunkett; Timothy J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Plunkett; Timothy J..The latest application filed is for "foot valve assembly for a down hole drill".
- Plunkett; Timothy J. - Roanoke VA
| Patent | Date |
|---|---|
| Foot valve assembly for a down hole drill Grant 8,561,730 - Yao , et al. October 22, 2 | 2013-10-22 |
| Variable frequency control for down hole drill and method Grant 8,215,419 - Plunkett , et al. July 10, 2 | 2012-07-10 |
| Foot Valve Assembly For A Down Hole Drill App 20110232922 - Yao; Jing James ; et al. | 2011-09-29 |
| Method For Assembling A Down Hole Drill App 20110192009 - Plunkett; Timothy J. | 2011-08-11 |
| Fluid distributor cylinder for percussive drills Grant 7,992,652 - Plunkett August 9, 2 | 2011-08-09 |
| Exhaust valve and bit assembly for down-hole percussive drills Grant 7,832,504 - Wolfer , et al. November 16, 2 | 2010-11-16 |
| Variable Frequency Control For Down Hole Drill App 20100282509 - Plunkett; Timothy J. ; et al. | 2010-11-11 |
| Fluid Distributor Cylinder For Percussive Drills App 20100193208 - Plunkett; Timothy J. | 2010-08-05 |
| Exhaust valve and bit assembly for down-hole percussive drills App 20090308661 - Wolfer; Dale R. ; et al. | 2009-12-17 |
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