Patents per Year
Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4532095 | Method of making a video disc from a disc preform | — | 1985-07-30 | $1,163,000 |
| 4460656 | Video disc preform and method of making a disc therefrom | — | 1984-07-17 | $1,269,000 |
| RE31235 | Method for producing injection molded and centrally apertured disc records | Herbert Rees | 1983-05-10 | |
| 4379686 | Apparatus for molding a recorded disc | Robert W. Chambers, Leslie A. Torrington | 1983-04-12 | $4,879,000 |
| 4327047 | Method for producing disc records having molded-in center holes | — | 1982-04-27 | $870,000 |
| 4302175 | Apparatus for molding recorded discs | — | 1981-11-24 | $918,000 |