Issued Patents All Time
Showing 51–53 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4406426 | Secrecy-coded cassette | — | 1983-09-27 |
| 4321592 | Multiple sensor intrusion detection system | Sheldon Apsell, Aaron A. Galvin | 1982-03-23 |
| 4221526 | Walkie low-lift truck with tiltable platen and rearwardly foldable load-supporting wheel struts | — | 1980-09-09 |