Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4639801 | Loading mechanism for a magnetic tape cassette apparatus | Rolf D. Hoppmanns, Walter Steup, Willibald Wieczorek | 1987-01-27 |
| 4578724 | Tape cassette holder with releasable reel hold-down | — | 1986-03-25 |
| 4323936 | Recording and/or reproducing apparatus | Harald Neckamm | 1982-04-06 |
| 4322761 | Tape guide in a helical scan cassette recorder | Gerhard Maryschka, Heinrich Shuster | 1982-03-30 |
| 4235395 | Magnetic tape cassette with pivoting cover | Hendrik C. Wardenaar, Franz Werner, Petrus J. J. Aarts | 1980-11-25 |