Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D476671 | Observation/security camera | Sander-Willem Van Schaik, Tom Philippe Jean Jacques Delaey | 2003-07-01 |
| 6000537 | Housing with readable side walls for a disc-shaped information carrier | — | 1999-12-14 |
| 5890590 | Housing for a disc-shaped information carrier | — | 1999-04-06 |
| 5560481 | Holder for a rectangular cassette | Paul J. F. Van Weele | 1996-10-01 |
| 5269412 | Cassette with a magnetic tape | — | 1993-12-14 |
| 5264987 | Cassette for magnetic tape provided with window | Norbert C. Vollmann | 1993-11-23 |
| 5214554 | Cassette for a record carrier | Norbert C. Vollmann, Anton Stoger, Gunther Bernauer | 1993-05-25 |
| D331235 | Digital compact cassette | Norbert C. Vollmann | 1992-11-24 |
| D290695 | Video cassette recorder | — | 1987-07-07 |
| D278429 | Dictating machine | Stefanus F. W. Joosten | 1985-04-16 |
| D274518 | Intercommunication apparatus | — | 1984-07-03 |
| D271486 | Dictating machine | — | 1983-11-22 |
| D269780 | Intercom speaker and receiver | — | 1983-07-19 |
| D267089 | Dictating machine | — | 1982-11-30 |
| D263585 | Video compact cassette | — | 1982-03-30 |
| D254183 | Head-phone | — | 1980-02-12 |
| D254185 | Dictating machine | — | 1980-02-12 |