Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6810359 | Maintenance and management method of equipment for production operations and support system therefor | — | 2004-10-26 |
| 5150097 | Motor driven bell striking mechanism | — | 1992-09-22 |
| RE31152 | Alarm buzzer | Hikoji Iwasaki, Shigeo Shimoya | 1983-02-15 |
| 4310833 | Electrically-energized horn | — | 1982-01-12 |
| 4183018 | Motor driven type gong striking mechanism | — | 1980-01-08 |