Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819221 | Apparatus for reading record carriers having substantially concentric or spiral tracks | Cornelius Antonius Hezemans, Johannes Leopoldus Bakx | 1989-04-04 |
| 4697258 | Apparatus for enabling an autotrack circuit of an optical disc reading apparatus during the positioning of a read beam | Martinus P. M. Bierhoff | 1987-09-29 |