Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4762971 | Spring-type operating mechanism for a circuit interrupter | — | 1988-08-09 |
| 4705144 | Spring operating mechanism for a circuit interrupter | Akiyoshi Onuma | 1987-11-10 |
| 4681993 | Spring operating mechanism for an electrical switch | Tadashi Kondo | 1987-07-21 |