Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866958 | Push-button lock mechanisms | Robert J. Bretl | 1989-09-19 |
| 4862714 | Push-button padlocks having swivel-only shackles | Robert J. Bretl | 1989-09-05 |
| 4829795 | Anti-pry padlock and method of use | — | 1989-05-16 |