Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4345186 | Metal vapor discharge lamp | Masato Saito, Michihiro Tsuchihashi, Yoshinori Takai, Keiji Watanabe | 1982-08-17 |
| 4319158 | Electrode for discharge lamp | Keiji Watanabe, Masato Saito | 1982-03-09 |