Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4633687 | Drive mechanism for key operated electronic lock | — | 1987-01-06 |
| D286854 | Key for door locks | Leonard J. Genest | 1986-11-25 |
| 4333324 | Spring/dead bolt lock assembly | Hagen Dietrich | 1982-06-08 |
| 4255953 | Combination spring/dead bolt lock | Hagen Dietrich | 1981-03-17 |