Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849726 | Circuit breaker | Isamu Osima | 1989-07-18 |
| 4820316 | Method of foreseeing break-through in gas adsorbing apparatus | Hisayuki Mizuno, Hiroyuki Fukushima, Mamoru Miyamoto, Kyouhei Ohizumi, Yoshio Nishimura | 1989-04-11 |