Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D289097 | Electric vacuum cleaner | Tsuneo Takahashi, Takaharu Andoh, Keiichi Washizuka | 1987-03-31 |
| D288972 | Electric vacuum cleaner | Tsuneo Takahashi, Takaharu Andoh, Keiichi Washizuka | 1987-03-24 |