Issued Patents 1989
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873603 | Circuit breaker | — | 1989-10-10 |
| 4866558 | Circuit breaker | — | 1989-09-12 |
| 4862312 | Circuit breaker with overcurrent protection | — | 1989-08-29 |
| 4860153 | Current sensing device | — | 1989-08-22 |
| 4858058 | Circuit breaker including selectively operable long-time-delay tripping circuit | — | 1989-08-15 |
| 4849848 | Circuit breaker | — | 1989-07-18 |
| 4847725 | Circuit breaker | — | 1989-07-11 |
| 4804778 | Process for producing methacrylic acid | Motomu Oh-Kita, Masaaki Kato | 1989-02-14 |