Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811578 | Padlock with tamper-actuated audible and/or inaudible alarm | John F. Masoncup | 1989-03-14 |
| 4795945 | Starting circuit for high intensity gaseous discharge lamps | — | 1989-01-03 |