Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6647587 | Vacuum cleaner using centrifugal force dust collection to prevent filter blinding | Naoyuki Ohara, Saburo Kajikawa, Tomonori Kato, Hiroshi Mori, Shin Yoshida | 2003-11-18 |
| 6582599 | Filter | Takashi Arai, Hideo Kamo | 2003-06-24 |