Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837935 | Jig saw | Rolf Simen | 1989-06-13 |
| 4837437 | Method and circuit arrangement for reducing the background count in radioactivity measurements with a coincidence-anticoincidence evaluation | Markus Forster, Harald Gaudlitz, Richard Hefka | 1989-06-06 |