Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304377 | Fluorescent lamp | Hiroyoshi Yamazaki, Noriyuki Maeda, Kazutaka Shimizu, Norihiko Tanaka, Yoshihiro Domon +5 more | 1989-10-31 |
| D303718 | Portable electric lantern | Masakatsu Suzuki, Yorimitsu Nagai | 1989-09-26 |
| 4826342 | Universal joint | — | 1989-05-02 |