Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6305457 | Disengageable rolling door drive | Jack Leivenzon | 2001-10-23 |
| 6116324 | Rolling door drive and mounting assembly | Jack Leivenzon | 2000-09-12 |
| 4976168 | Drive for a door operator | Lucio Lotznicker, Raymond Hawkins, George Karban, Zvi Leivenzon | 1990-12-11 |
| 4706727 | Door operator | Zvi Leivenzon | 1987-11-17 |
| 4533905 | Indicating means for a door operator device | Steven Leivenzon | 1985-08-06 |
| 4452292 | Automatic door opener | Zvi Leivenzon | 1984-06-05 |
| 4449562 | Mullion section member | Steven Leivenzon | 1984-05-22 |
| 4342354 | Mechanism for stopping the drive or reversing the drive of motors of roller shutter doors | Steven Leivenzon | 1982-08-03 |
| 4234033 | Roller door and frame combination | Steven Leivenzon | 1980-11-18 |
| 4182144 | Door handle lock and latch mechanism for corrugated roller doors | Steven Leivenzon | 1980-01-08 |