Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4614902 | Closure retention apparatus for automatic doors | — | 1986-09-30 |
| 4440428 | Apparatus for delaying the closing of a door | Robert S. Kaiser | 1984-04-03 |
| 4426639 | Timing apparatus | — | 1984-01-17 |
| 4217616 | Motor overload protection circuit | — | 1980-08-12 |
| 4206390 | Logic control for power operated door | — | 1980-06-03 |