Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796241 | Device for producing a high frequency modulation magnetic field used in magneto-optical recording | Takehiro Nagaki, Koichi Aso, Hiroshi Yamanoi | 1989-01-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796241 | Device for producing a high frequency modulation magnetic field used in magneto-optical recording | Takehiro Nagaki, Koichi Aso, Hiroshi Yamanoi | 1989-01-03 |