Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862304 | Composite magnetic head | Yutaka Yunoki, Manabu Inoue | 1989-08-29 |
| 4848511 | Vibration insulating rubber | Tetsuo Ohyama, Shuichi Akita, Akio Ueda | 1989-07-18 |
| 4840508 | Mechanical pencil capable of automatically propelling successive lengths of lead | — | 1989-06-20 |
| 4839854 | Data collection system having stationary unit with electromagnetic induction circuitry for bidirectionally relaying data | Yasuo Sakami, Shigetaka Okina, Junichi Tsubouchi, Shozo Izaki, Toshitaka Fukushima +1 more | 1989-06-13 |