| 4645723 |
Production of magnetic recording media possessing a backing coating, and magnetic recording media thus produced |
Milena Melzer, Hermann Roller, Norbert Schneider, Wulf Munzner |
1987-02-24 |
| 4621779 |
Video tape cassette |
Roland Roos, Wulf Muenzner, Werner Balz, Heinz Berger |
1986-11-11 |
| 4557433 |
Tape cassette and spring member therefor |
Roland Roos, Wulf Muenzner, Werner Balz, Heinz Berger |
1985-12-10 |
| 4541587 |
Hub for magnetic tape cassettes, especially compact cassettes, and magnetic tape cassette possessing one or more such hubs |
Werner Stumpfi, Gunter Bettinger, Friedrich Engel, Norbert Kreimes, Dietmar Pfefferkorn +2 more |
1985-09-17 |
| 4515331 |
Hub for magnetic tape cassettes, especially compact cassettes, and magnetic tape cassette possessing one or more such hubs |
Werner Stumpfi, Gunter Bettinger, Friedrich Engel, Norbert Kreimes, Dietmar Pfefferkorn +2 more |
1985-05-07 |
| 4438892 |
Tape cassette, especially a magnetic tape cassette |
Hubert Koob, Bert Nestler |
1984-03-27 |
