Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6583543 | Fluorescent lamp with improved productivity, and manufacturing method for the fluorescent lamp | Takeshi Matsumura | 2003-06-24 |
| D474850 | Part of fluorescent lamp | Koichi Katase | 2003-05-20 |
| 6558019 | Bulb-shaped fluorescent lamp | Shiro Iida, Takeshi Matsumura, Nobuharu Hata | 2003-05-06 |