Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5371634 | Arrangement for obtaining prerecorded digital music cassettes | Jozef M. Duurland, Willem L. Van Der Kruk | 1994-12-06 |
| 5363250 | Prerecorded record carrier | Gerardus C. P. Lokhoff | 1994-11-08 |
| 5243470 | Arrangement for obtaining prerecorded digital music cassettes | Jozef M. Duurland, Willem L. Van Der Kruk | 1993-09-07 |
| 5148330 | Method of and arrangement for obtaining prerecorded digital music cassettes | Jozef M. Duurland | 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 | Jozef M. Duurland | 1989-11-21 |