Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11421946 | Heat exchanger and water heating apparatus including the same | Masahiro Iguchi | 2022-08-23 |
| 11293702 | Heat exchanger and hot water apparatus | Takeshi Ohigashi | 2022-04-05 |