Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6058246 | Heater and heating installation | Franz Lackner | 2000-05-02 |
| 5118307 | Contact strip | Franz-Josef Knoop | 1992-06-02 |
| 4657316 | Viewing screen with a swiveling screen housing | Walter Hardt, Norbert Bonke | 1987-04-14 |
| 4390119 | Tape guide system | Roland Smetana | 1983-06-28 |
| 4354654 | Swivel mounting unit | Rudolf Schmeykal, Herman Doeinghaus | 1982-10-19 |
| 4348707 | Anti erase interlock for a magnetic tape cassette | Heinrich Maly | 1982-09-07 |
| 4283026 | Magnetic tape cassette | — | 1981-08-11 |
| 4235395 | Magnetic tape cassette with pivoting cover | Hendrik C. Wardenaar, Petrus J. J. Aarts, Franz Beitler | 1980-11-25 |
| 4234140 | Magnetic tape cassette drive system | Cornelis P. Van Nie, Gerhard Maryschka, Joannus H. F. C. Sieben | 1980-11-18 |