All of the broken lines in the accompanying drawings illustrate environmental structure and form no part of the claimed design.
All of the broken lines in the accompanying drawings illustrate environmental structure and form no part of the claimed design.
| Number | Name | Date | Kind |
|---|---|---|---|
| 2679972 | Brumme | Jun 1949 | A |
| 4164690 | Muller et al. | Aug 1979 | A |
| D289680 | Heob | May 1987 | S |
| D315949 | Sello | Apr 1991 | S |
| D404122 | Hayashi et al. | Jan 1999 | S |
| D461550 | Hsin-mao | Aug 2002 | S |
| D488857 | Wintersteen et al. | Apr 2004 | S |
| D539408 | Wu et al. | Mar 2007 | S |
| D625799 | Salisbury et al. | Oct 2010 | S |
| D636863 | Isoda et al. | Apr 2011 | S |
| 8056933 | Liptak | Nov 2011 | B2 |
| D667536 | Zengin | Sep 2012 | S |
| D669571 | Penlesky et al. | Oct 2012 | S |
| D701299 | Oba | Mar 2014 | S |
| Entry |
|---|
| Drawing of Prior Art Utility Set Fan. |
| Drawing of Prior Art Belt Driven Tube Fan. |
| Drawing of Prior Art Bifurcated Fan. |