Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D917031 | Heat exchanger for water heater | Masaki Kondo, Norihide Wada | 2021-04-20 |
| D916257 | Heat exchanger for water heater | Masaki Kondo, Norihide Wada | 2021-04-13 |
| D916258 | Heat exchanger for water heater | Masaki Kondo, Norihide Wada | 2021-04-13 |