Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6454527 | Noise reduction mechanism of fan device and molding method of porous damping material therefor | Toshihiko Nishiyama, Kengo Koshimizu | 2002-09-24 |
| 6405825 | Noise absorption blade mounting structure for working vehicles | Takashi Kawakami | 2002-06-18 |