Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819112 | Thin film magnetic head | Tatsuya Saito | 1989-04-04 |
| 4811142 | Magnetic head for vertical magnetic recording and method of producing same | Keishi Nakashima, Yasuo Tanaka, Toshiaki Hashidate | 1989-03-07 |