Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847458 | Electric switch | — | 1989-07-11 |
| 4823926 | Electric motor regulating and control drive having a clutch-brake unit | Hilmar Wittler, Herbert Palloch | 1989-04-25 |
| 4822963 | Vandal resistant push button assembly | — | 1989-04-18 |