Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4750055 | Record carrier for storage of video information | — | 1988-06-07 |
| 4677500 | System for playing back a film recorded as a video signal on a disc-shaped record carrier | — | 1987-06-30 |
| 4567534 | Apparatus for reading a disc-shaped record carrier | Robertus W. C. Groen, Cornelis A. M. de Jonge, Lawrence M. Schwartz | 1986-01-28 |