Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D310049 | Perimetrical watch protector | James Hartman | 1990-08-21 |
| 4837756 | Perimetrical watch protector | James Hartman | 1989-06-06 |
| 4592660 | Watch protector | James Hartman | 1986-06-03 |