Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4402798 | Method for the manufacture of a metallic recording substrate for a capacitance electronic disc and the recording substrate obtained thereby | Leonard P. Fox | 1983-09-06 |
| 4395122 | Defect detection system | Peter D. Southgate | 1983-07-26 |
| 4375096 | Multi-bandwidth optical playback apparatus with elongated read spot | Michael J. Lurie | 1983-02-22 |
| 4363118 | Sound carrier amplitude measurement system | William R. Roach | 1982-12-07 |
| 4341472 | Method and apparatus for positioning a tapered body | Marvin Allan Leedom, James P. Wittke | 1982-07-27 |
| 4316279 | Optical recording in thin photoresist | John P. Russell, Arthur Herbert Firester | 1982-02-16 |
| 4206477 | Optical recording with track drop compensation | Arthur Herbert Firester | 1980-06-03 |