Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5610476 | Spiral fluorescent tube and method and device for manufacturing the same | Toshiyoshi Oga, Shunji Asai | 1997-03-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5610476 | Spiral fluorescent tube and method and device for manufacturing the same | Toshiyoshi Oga, Shunji Asai | 1997-03-11 |