Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5760353 | Safety switch | — | 1998-06-02 |
| 5703339 | Safety switch | Peter Schmidt | 1997-12-30 |
| 4873400 | Manually activated position indicator | Walter Link, Giovanni Quinzio | 1989-10-10 |
| 4720907 | Identification system | — | 1988-01-26 |
| 4539544 | Detent mechanism for a hand-operated transducer | — | 1985-09-03 |
| 4454392 | Safety switch | Peter Schmidt | 1984-06-12 |