Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4598939 | Exit device | Lawrence D. Butts, Sidney J. Lampley | 1986-07-08 |
| 4404825 | Padlock having a replaceable cylinder | David Dixon | 1983-09-20 |
| 4300370 | Securing device comprising padlock and anchored housing | Donald J. Kaiser, Albert Behar | 1981-11-17 |