Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4533905 | Indicating means for a door operator device | Simon Leivenzon | 1985-08-06 |
| 4449562 | Mullion section member | Simon Leivenzon | 1984-05-22 |
| 4342354 | Mechanism for stopping the drive or reversing the drive of motors of roller shutter doors | Simon Leivenzon | 1982-08-03 |
| 4234033 | Roller door and frame combination | Simon Leivenzon | 1980-11-18 |
| 4182144 | Door handle lock and latch mechanism for corrugated roller doors | Simon Leivenzon | 1980-01-08 |