Walker; Thomas A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Walker; Thomas A..The latest application filed is for "multi-sectional percussive drill bit assembly".
- Walker; Thomas A. - Berlin PA
- Walker; Thomas A. - Ojai CA
- Walker; Thomas A. - Tustin CA
Trademarks
| Patent | Date |
|---|---|
| Multi-sectional percussive drill bit assembly Grant 7,419,017 - Walker , et al. September 2, 2 | 2008-09-02 |
| Multi-sectional percussive drill bit assembly Grant 7,389,833 - Walker , et al. June 24, 2 | 2008-06-24 |
| Multi-Sectional Percussive Drill Bit Assembly App 20070095576 - Walker; Thomas A. ; et al. | 2007-05-03 |
| Multi-Sectional Percussive Drill Bit Assembly App 20060278433 - Walker; Thomas A. ; et al. | 2006-12-14 |
| Method for creating an air pressure App 20030206809 - Walker, Thomas A. | 2003-11-06 |
| Method for creating an air pressure App 20030206808 - Walker, Thomas A. | 2003-11-06 |
| Electromechanical back brace apparatus Grant RE35,940 - Heinz , et al. October 27, 1 | 1998-10-27 |
| Electromechanical back brace apparatus Grant 5,226,874 - Heinz , et al. July 13, 1 | 1993-07-13 |
| Flying disk with centrifugally activated sound generator Grant 4,869,699 - Plambeck , et al. September 26, 1 | 1989-09-26 |
| Electrical musical instrument amplifier having improved tremolo circuit, improved reverberation control, and power reduction circuit for distortion mode operation Grant 3,978,421 - Walker August 31, 1 | 1976-08-31 |
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