Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D904587 | Heat exchanger for water heater | Takeshi Oohigashi, Masaki Kondo | 2020-12-08 |
| D904588 | Heat exchanger for water heater | Takeshi Oohigashi, Masaki Kondo | 2020-12-08 |
| D904589 | Heat exchanger for water heater | Takeshi Oohigashi, Masaki Kondo | 2020-12-08 |