Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6561138 | Water heater with a flame arrester | Toshihiro Kobayashi, Masaru Kodama | 2003-05-13 |
| 6540504 | Combustion appliance with flame blocking device | Toshihiro Kobayashi | 2003-04-01 |