Air filter

Details Air filter Air filter

2009-04-20

2009-12-01

Nelson, T. Chase (Department: 2914)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Design Patent

active

D0605274

CLAIM:
The ornamental design for an air filter, as shown and described.

REFERENCES:
patent: 5238477 (1993-08-01), Layton
patent: D397777 (1998-09-01), Mack, Jr.
patent: D402356 (1998-12-01), Hodge
patent: D425189 (2000-05-01), Gillingham et al.
patent: D449100 (2001-10-01), Sundet et al.
patent: 6464745 (2002-10-01), Rivera et al.
patent: D538418 (2007-03-01), Pippel et al.
patent: D548826 (2007-08-01), Katta
patent: 2004/0194441 (2004-10-01), Kirsch
patent: 2005/0284116 (2005-12-01), Duffy
patent: 2006/0037296 (2006-02-01), Duffy
patent: 2006/0053759 (2006-03-01), Winters et al.
patent: 2008/0105126 (2008-05-01), Kawano et al.

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