Issued Patents 1989
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887563 | Valve operating apparatus for an internal combustion engine | Atsushi Ishida | 1989-12-19 |
| 4854272 | Valve operating device for internal combustion engine | — | 1989-08-08 |
| 4848284 | Valve operating device for multicylinder internal combustion engine | — | 1989-07-18 |
| 4848285 | Valve operating apparatus for an internal combustion engine | — | 1989-07-18 |
| 4844022 | Valve operating apparatus for an internal combustion engine | — | 1989-07-04 |
| 4844023 | Valve operating device for internal combustion engine | Takashi Sugai | 1989-07-04 |
| 4810967 | Position sensor for detecting angular position | Toshio Yokoyama, Iwao Shimane | 1989-03-07 |
| 4808934 | Position sensor for detecting angular position | Toshio Yokoyama, Iwao Shimane | 1989-02-28 |
| 4799463 | Valve operating mechanism for internal combustion engines | — | 1989-01-24 |
| 4796354 | Method of manufacturing a position sensor for detecting angular position | Toshio Yokoyama, Iwao Shimane | 1989-01-10 |
| 4794892 | Hydraulic circuit for valve operation timing changing device for internal combustion engine | — | 1989-01-03 |