Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848552 | Damper disc | Syogo Ohga | 1989-07-18 |
| 4832165 | Clutch brake | Masaaki Asada | 1989-05-23 |
| 4820316 | Method of foreseeing break-through in gas adsorbing apparatus | Hisayuki Mizuno, Masao Miura, Hiroyuki Fukushima, Mamoru Miyamoto, Kyouhei Ohizumi | 1989-04-11 |