Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887072 | Alarm apparatus | Tetsuo Kimura | 1989-12-12 |
| 4868261 | Optical resin material | Toshiyuki Fujita, Takayuki Saito, Hiromasa Kawai, Yutaka Hosoi, Hideaki Shibata | 1989-09-19 |
| 4823118 | Fire sensor | Takashi Suzuki | 1989-04-18 |