Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4453504 | Single piston, double chambered reciprocal internal combustion engine | Donald Simpson | 1984-06-12 |
| 4249820 | Registration control system for copy machine | Francis T. Arnold | 1981-02-10 |