Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4345186 | Metal vapor discharge lamp | Michihiro Tsuchihashi, Yoshinori Takai, Keiji Fukuyama, Keiji Watanabe | 1982-08-17 |
| 4340844 | Lighting equipment | Michihiro Tsuchihashi, Keiichi Baba, Yusaku Matsushima | 1982-07-20 |
| 4319158 | Electrode for discharge lamp | Keiji Watanabe, Keiji Fukuyama | 1982-03-09 |