Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4827210 | Cross-coil moving-magnet measuring instrument | Roland Duffait | 1989-05-02 |
| 4633174 | Crossed-coil rotating-magnet measuring instrument | Roland Duffait | 1986-12-30 |
| 4567434 | Analog display device, particularly a tachometer | — | 1986-01-28 |
| 4475082 | Analog display device, particularly a tachometer | — | 1984-10-02 |