Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4765280 | Direct-contact type hot water heater | Kunihiro Kobayashi, Saburo Usui, Shoji Otsuka, Choji Najima | 1988-08-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4765280 | Direct-contact type hot water heater | Kunihiro Kobayashi, Saburo Usui, Shoji Otsuka, Choji Najima | 1988-08-23 |