Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884538 | Diesel engine swirl chamber | — | 1989-12-05 |
| 4875444 | Swirl chamber for diesel engines and the like | Hirofumi Tsuchida, Akira Oyamada, Sumio Hirao | 1989-10-24 |
| 4860220 | Apparatus for displaying three-dimensional objects | Kiroyuki Mizutani | 1989-08-22 |
| 4832855 | Immersion oil for microscopy | — | 1989-05-23 |
| 4814667 | Light emitting diode array having uniform illuminance distribution | — | 1989-03-21 |
| 4803316 | Push button switch using dome spring and switch element thereof | Kazutoshi Hayashi, Hideo Nabetani, Kazushi Ishida | 1989-02-07 |