Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870255 | Infrared ray heating appliance utilizing a convection fan | Tatsuya Tsuda | 1989-09-26 |
| 4803324 | Microwave heating and infrared ray heating appliance | Tatsuya Tsuda | 1989-02-07 |