Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D289097 | Electric vacuum cleaner | Tsuneo Takahashi, Kyouichi Morioka, Keiichi Washizuka | 1987-03-31 |
| D288972 | Electric vacuum cleaner | Kyouichi Morioka, Tsuneo Takahashi, Keiichi Washizuka | 1987-03-24 |
| D285923 | Arithmetic operation control machine for electronic computers | Tsuneo Takahashi, Keiichi Washizuka | 1986-09-30 |