Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841514 | Optical recording method and apparatus using two fight spots | Nobuyoshi Tsuboi, Yoshio Sato, Satoshi Shimada, Hiroshi Sasaki | 1989-06-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841514 | Optical recording method and apparatus using two fight spots | Nobuyoshi Tsuboi, Yoshio Sato, Satoshi Shimada, Hiroshi Sasaki | 1989-06-20 |