Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840593 | Low pressure mercury vapor discharge lamp and preparation thereof | Takao Takeda, Hitoshi Yamazaki, Yoshiteru Taniguchi, Norihiko Tanaka, Hiroshi Ito +1 more | 1989-06-20 |