Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5512716 | Switching pad or plate | — | 1996-04-30 |
| 5167432 | Safety bumper with signalling device | Manfred Buttner | 1992-12-01 |
| 4773155 | Mat switch and process for its manufacture | — | 1988-09-27 |