Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851772 | Magnet assembly for measurement of displacement | Joachim Acht | 1989-07-25 |
| 4845469 | Device for electrically monitoring oil level, particularly in automobile internal combustion engines | — | 1989-07-04 |