Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5367158 | Photoelectric switch for use with a machine control circuit | Mark C. Matzka | 1994-11-22 |
| D346587 | Contoured transparent cover for a photoelectric switch | Mark C. Matzka | 1994-05-03 |