Issued Patents 2020
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D904587 | Heat exchanger for water heater | Masaki Kondo, Norihide Wada | 2020-12-08 |
| D904588 | Heat exchanger for water heater | Masaki Kondo, Norihide Wada | 2020-12-08 |
| D904589 | Heat exchanger for water heater | Masaki Kondo, Norihide Wada | 2020-12-08 |
| 10816222 | Hot water apparatus with flanged connections | Wataru Ooshita | 2020-10-27 |