Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5824130 | Apparatus for manufacturing spiral fluorescent tube | Toshiyoshi Oga, Masaru Saito | 1998-10-20 |
| 5766295 | Method of manufacturing a spiral fluorescent tube | Toshiyoshi Oga, Masaru Saito | 1998-06-16 |
| 5610476 | Spiral fluorescent tube and method and device for manufacturing the same | Toshiyoshi Oga, Masaru Saito | 1997-03-11 |
| 4802076 | Switching regulator type power supply circuit | — | 1989-01-31 |