Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854620 | Door set mounting | Lance E. Best | 1989-08-08 |
| 4724690 | Security bolt | Lance E. Best | 1988-02-16 |
| 4689975 | Padlock | Donald J. Newman | 1987-09-01 |
| 4639022 | Sliding window or door lock | Lance E. Best | 1987-01-27 |
| 4624119 | Tumbler lock | Donald J. Newman | 1986-11-25 |
| 4512166 | Cylinder lock and key | Donald J. Newman | 1985-04-23 |
| 4483162 | Locking mechanism | Hans J. Esser | 1984-11-20 |
| 4434634 | Lock | Lance E. Best | 1984-03-06 |
| 4387918 | Deadlock mechanism | Hans J. Esser | 1983-06-14 |
| 4382349 | Window operator | Donald J. Newman | 1983-05-10 |
| 4320638 | Tumbler lock and key | Donald J. Newman | 1982-03-23 |
| 4248068 | Deadlocking mechanism | Hans J. Esser | 1981-02-03 |