Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4794973 | Door safety bar | — | 1989-01-03 |
| 4501963 | Reversing device for roller doors | — | 1985-02-26 |
| 4392392 | Electrically-operated roller door operating mechanism | Warwick J. Lumbers, John A. Bone | 1983-07-12 |