Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5404251 | Auto reverse cassette deck capable of recording/reproducing with two different cassette types and formats | Bernard Timmer, Norbert C. Vollmann | 1995-04-04 |
| 5371634 | Arrangement for obtaining prerecorded digital music cassettes | Johannes J. Roering, Willem L. Van Der Kruk | 1994-12-06 |
| 5243470 | Arrangement for obtaining prerecorded digital music cassettes | Johannes J. Roering, Willem L. Van Der Kruk | 1993-09-07 |
| 5148330 | Method of and arrangement for obtaining prerecorded digital music cassettes | Johannes J. Roering | 1992-09-15 |
| 4882637 | Copying apparatus for copying a magnetic pattern from a master magnetic tape on a duplicate magnetic tape and method of operating such a copying apparatus | Johannes J. Roering | 1989-11-21 |
| 4864439 | Apparatus drawer for unambiguously receiving a digital audio tape cassette | — | 1989-09-05 |
| 4681280 | Magnetic-tape cassette with stretched liner arrangement | Sinnighe J. Bos, Hendrik K. Kreeft | 1987-07-21 |