Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8087275 | Master keyed combination lock | Carl H. Poppe | 2012-01-03 |
| 7805969 | Master keyed combination lock | Carl H. Poppe | 2010-10-05 |
| 7441431 | High security pin tumbler lock | John L. Weber, Marc Tobias | 2008-10-28 |
| 5698085 | Coating analysis apparatus | — | 1997-12-16 |
| 4611677 | Shock proof scale | — | 1986-09-16 |