Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851933 | Magnetic disk apparatus having magnetic head with pre-erase gap | Yuji Sakai, Takehito Yamada | 1989-07-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851933 | Magnetic disk apparatus having magnetic head with pre-erase gap | Yuji Sakai, Takehito Yamada | 1989-07-25 |