Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4717091 | Tape cassette, in particular a video tape cassette, and a pressure spring therefor | Klaus Schoettle, Paul Deigner, Herbert Dietze, Oswald Waidele | 1988-01-05 |
| 4613095 | Plate spring for a tape cassette | Klaus Schoettle, Herbert Dietze, Juergen Dreyer, Eugen Kamm, Peter Wieme | 1986-09-23 |