Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4644224 | Compact fluorescent lamp having bulb base | Hiroshi Takada, Seiichi Tairaku | 1987-02-17 |
| 4323225 | Circular fluorescent lamp manufacturing apparatus | Manabu Nakaoka | 1982-04-06 |