Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D307647 | Automatic fire extinguisher | Yasuo Yamamura, Tetsuyuki Sugimoto | 1990-05-01 |
| 4838356 | Fire extinguisher foam chamber with remote maintenance and testing for oil tanks | — | 1989-06-13 |