Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5199774 | Combination lock and interlock for a file cabinet | Steven F. Trinkel, David L. Hostetter | 1993-04-06 |
| 4469382 | Desk locking mechanism | Mathew A. Slaats, Jay M. Henriott, Steven F. Trinkel | 1984-09-04 |