Air filter

Details Air filter Air filter

2009-01-12

2010-06-29

Nelson, T. Chase (Department: 2914)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Design Patent

active

D0618779

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

REFERENCES:
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patent: 5523057 (1996-06-01), Mazzilli
patent: 5525145 (1996-06-01), Hodge
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patent: 5891402 (1999-04-01), Sassa et al.
patent: 5922096 (1999-07-01), Stemmer
patent: 6139426 (2000-10-01), Koerber
patent: 6156089 (2000-12-01), Stemmer et al.
patent: D449100 (2001-10-01), Sundet et al.

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