Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851732 | Spark plug having a flame deflector for use in an internal combustion engine | Ryohei Kashiwara, Hideaki Kashiwara | 1989-07-25 |
| 4808878 | Ignition plug for internal combustion engines to cause instant combustion | Ryohei Kashiwara, Hideaki Kashiwara | 1989-02-28 |