Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5661869 | Electrical contact cleaner | — | 1997-09-02 |
| 5607512 | Electrical contact cleaner and method | — | 1997-03-04 |
| 4392889 | Method and apparatus for recovering silver and plastic from used film | — | 1983-07-12 |
| 4373285 | Gun muzzle loader | David W. Presby | 1983-02-15 |