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, Tomonori Kato, Hiroshi Mori, Kouichi Ito, Shin Yoshida | 2003-11-18 |
| 6536073 | Electric vacuum cleaner | Hiroyuki Uratani, Yoshiaki Ohnishi, Toshifumi Miyahara, Masaki Shibuya, Kazuma Suo | 2003-03-25 |