Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4976168 | Drive for a door operator | Lucio Lotznicker, Raymond Hawkins, George Karban, Simon Leivenzon | 1990-12-11 |
| 4706727 | Door operator | Simon Leivenzon | 1987-11-17 |
| 4452292 | Automatic door opener | Simon Leivenzon | 1984-06-05 |