Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875444 | Swirl chamber for diesel engines and the like | Toshiaki Tanaka, Akira Oyamada, Sumio Hirao | 1989-10-24 |
| 4833373 | System for shaking water off windshield | Kazuhiro Doi, Bunichiro Fujii, Naoki Honda, Hiroyuki Kanesaka | 1989-05-23 |
| 4828383 | Range-finding optical system | Keiji Kunishige | 1989-05-09 |
| 4810071 | Variable focal length lens system | Shin-ichi Mihara | 1989-03-07 |