Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8201897 | Hill hold for an electric vehicle | Warren Clark | 2012-06-19 |
| 8120291 | Drive system for electrically operated vehicle | Warren Clark | 2012-02-21 |
| 7926889 | Hill hold for an electric vehicle | Warren Clark | 2011-04-19 |
| 7825616 | AC drive system for electrically operated vehicle | Warren Clark | 2010-11-02 |
| 7560882 | AC drive system for electrically operated vehicle | Warren Clark | 2009-07-14 |
| 7400238 | Brake light system | Warren Clark, Aric Singletary | 2008-07-15 |
| 7332881 | AC drive system for electrically operated vehicle | Warren Clark | 2008-02-19 |
| 7205493 | Pressure sensitive horn switch | Aric Singletary, Warren Clark | 2007-04-17 |
| 4733043 | Ram stabilizing circuit for electrical discharge machine | — | 1988-03-22 |
| 4733058 | Fail transistor detection and display system for electrical discharge machining apparatus | Kuang-Ta Ho | 1988-03-22 |
| 4471198 | Cut-off protection system for electrical discharge machining apparatus | Randall C. Gilleland, Davey J. Chance | 1984-09-11 |
| 4460815 | Current limit system and method for electrical discharge machining apparatus | Randall C. Gilleland | 1984-07-17 |
| 4320278 | Servo feed system for electrical discharge machining apparatus | Randall C. Gilleland, Davey J. Chance | 1982-03-16 |
| 4320279 | Programmable pulse generator for electrical discharge machining apparatus | Randall C. Gilleland, Davey J. Chance | 1982-03-16 |
| 4319114 | Current limit system for electrical discharge machining apparatus | Randall C. Gilleland, Davey J. Chance | 1982-03-09 |
| 4306135 | Power output module for electrical discharge machining power supply circuit | Randall C. Gilleland, Davey J. Chance | 1981-12-15 |
| 4303957 | Gap condition sensing circuit for electrical discharge machining power supply | Randall C. Gilleland, Davey J. Chance | 1981-12-01 |
| 4296302 | Adaptive control of gap voltage and power to control servo operation of an electrical discharge machining apparatus | Randall C. Gilleland, Davey J. Chance | 1981-10-20 |
| 4292490 | Electrical discharge machining power supply with digitally controlled on and off time and protective system | Randall C. Gilleland, Davey J. Chance | 1981-09-29 |
| 4267422 | Power supply circuit of the high voltage type for electrical discharge machining apparatus | Randall C. Gilleland, Davey J. Chance | 1981-05-12 |
| 4267423 | Protection circuit for electrical discharge machining power supply | Randall C. Gilleland, Davey J. Chance | 1981-05-12 |
| 4258243 | Over current protection system for electrical discharge machining apparatus | Randall C. Gilleland, Davey J. Chance | 1981-03-24 |
| 4254320 | Power output module for electrical discharge machining power supply circuit | Randall C. Gilleland, Davey J. Chance | 1981-03-03 |
| 4249059 | Gap condition light indicator system for electrical discharge machining apparatus | Randall C. Gilleland, Davey J. Chance | 1981-02-03 |
| 4242560 | Servo feed system for an electrical discharge machining apparatus | Randall C. Gilleland, Davey J. Chance | 1980-12-30 |