Draft inducer
Description
All of the broken lines in the accompanying drawings illustrate environmental structure and form no part of the claimed design.
Claims
The ornamental design for a draft inducer, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
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| 4164690 | August 14, 1979 | Muller et al. |
| D289680 | May 5, 1987 | Heob |
| D315949 | April 2, 1991 | Sello |
| D404122 | January 12, 1999 | Hayashi et al. |
| D461550 | August 13, 2002 | Hsin-mao |
| D488857 | April 20, 2004 | Wintersteen et al. |
| D539408 | March 27, 2007 | Wu et al. |
| D625799 | October 19, 2010 | Salisbury et al. |
| D636863 | April 26, 2011 | Isoda et al. |
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| D701299 | March 18, 2014 | Oba |
- Drawing of Prior Art Utility Set Fan.
- Drawing of Prior Art Belt Driven Tube Fan.
- Drawing of Prior Art Bifurcated Fan.
Patent History
Patent number: D726896
Type: Grant
Filed: Mar 15, 2013
Date of Patent: Apr 14, 2015
Assignee: US Draft Co., LLC (Fort Worth, TX)
Inventors: Thaddeus James Rohskopf (Fort Worth, TX), Timothy Edward McNulty (Fort Worth, TX)
Primary Examiner: David Muller
Application Number: 29/449,961
Type: Grant
Filed: Mar 15, 2013
Date of Patent: Apr 14, 2015
Assignee: US Draft Co., LLC (Fort Worth, TX)
Inventors: Thaddeus James Rohskopf (Fort Worth, TX), Timothy Edward McNulty (Fort Worth, TX)
Primary Examiner: David Muller
Application Number: 29/449,961
Classifications
Current U.S. Class:
Flow Director (29) (D23/387)