Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669570 | Magnetic tape cassette apparatus for reversible playing of magnetic tape cassettes | Norbert Kunze, Dieter Muller | 1997-09-23 |
| 5647549 | Magnetic tape cassette apparatus with drive | Norbert Kunze, Dieter Muller | 1997-07-15 |