Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4803338 | Magnetic head having improved track width narrowing grooves | Noriyuki Kumasaka, Shigekazu Otomo, Takeo Yamashita, Juichi Morikawa | 1989-02-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4803338 | Magnetic head having improved track width narrowing grooves | Noriyuki Kumasaka, Shigekazu Otomo, Takeo Yamashita, Juichi Morikawa | 1989-02-07 |