Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4903252 | Disc file apparatus | Katsufusa Tanaka, Takeo Motoyoshi, Tohru Yamashita, Naoyuki Nakatsukasa | 1990-02-20 |
| 4878137 | Disk file device | Tohru Yamashita | 1989-10-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4903252 | Disc file apparatus | Katsufusa Tanaka, Takeo Motoyoshi, Tohru Yamashita, Naoyuki Nakatsukasa | 1990-02-20 |
| 4878137 | Disk file device | Tohru Yamashita | 1989-10-31 |