Air filter

Details Air filter Air filter

2002-07-30

2003-05-20

Taylor, Robin V. (Department: 2911)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Design Patent

active

D0474836

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

REFERENCES:
patent: 5049170 (1991-09-01), Parnoff
patent: 5137554 (1992-08-01), Carter
patent: D342990 (1994-01-01), Jaroszczyk
patent: 5685887 (1997-11-01), Mochida
patent: D401684 (1998-11-01), Shelton et al.
patent: D450826 (2001-11-01), Song

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