Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5410253 | Method of indicating combustion in an internal combustion engine | Rodger B. Evans, Robert Mince, Carlton T. Davis, Daniel H. Hopper, Joel F. Downey | 1995-04-25 |
| 5392754 | Method of suppressing ringing in an ignition circuit | Daniel H. Hopper, Marc R. Engelhardt | 1995-02-28 |