Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8036376 | Echo prevention circuit having adaptive digital filter | Hideki Ohashi, Takeo Inoue | 2011-10-11 |
| 7921816 | Control device for hydraulically driven fan | Keiji Yanagihara, Kouji Hoshi | 2011-04-12 |