Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6647587 | Vacuum cleaner using centrifugal force dust collection to prevent filter blinding | Naoyuki Ohara, Saburo Kajikawa, Hiroshi Mori, Kouichi Ito, Shin Yoshida | 2003-11-18 |