Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845699 | Electric mechanical transducer and optical type pickup apparatus driven by a magnetic field | Ryoichi Kawasaki, Masami Shimizu, Kozo Suzuki, Noriyoshi Oyama | 1989-07-04 |
| 4811320 | Optical type pickup apparatus with lens holder supported by frame wires each having an end inserted into a frame hole | Ryoichi Kawasaki, Masami Shimizu, Kozo Suzuki, Noriyoshi Oyama | 1989-03-07 |