Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877183 | Air flow control device for an air conditioner | Kenji Matsuda, Kenji Togashi, Hiroyuki Umemura, Tetsuji Okada, Hidenori Ishioka | 1989-10-31 |
| 4858824 | Air conditioner | Kenji Matsuda, Sakuo Sugawara, Masanori Hara, Hiroyuki Umemura, Hidenori Ishioka | 1989-08-22 |
| 4850203 | Air conditioner control apparatus | Tetsuji Okada, Hiroyuki Umemura, Kenji Matsuda, Hidenori Ishioka | 1989-07-25 |
| 4807444 | Air flow control device | Hiroyuki Umemura, Tetsuji Okada, Kenji Matsuda, Hidenori Ishioka, Isao Arai +3 more | 1989-02-28 |