Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841738 | Method and apparatus of automatically switching between cooling and heating modes of an air conditioner | Hikaru Katsuki, Masayuki Shimizu | 1989-06-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841738 | Method and apparatus of automatically switching between cooling and heating modes of an air conditioner | Hikaru Katsuki, Masayuki Shimizu | 1989-06-27 |