Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831349 | Switching device | Takanori Ohta, Shigeo Hara, Kazuo Iwata | 1989-05-16 |
| 4806809 | Rotary shaft coupling device | Kazuhisa Kubota, Takao Sakakibara, Yasuo Miyake, Sinzi Mizutani | 1989-02-21 |