Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5180978 | Proximity sensor with reduced temperature sensitivity using A.C. and D.C. energy | Stephen J. Postma, Nick A. Demma, Paul E. Bjork, Thomas J. Wagener | 1993-01-19 |
| 5118963 | Symmetrical controlled switching circuit | — | 1992-06-02 |
| 4906858 | Controlled switching circuit | — | 1990-03-06 |