Air purifier

Details Air purifier Air purifier

2007-11-07

2008-09-30

Zarfas, Louis S (Department: 2914)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Design Patent

active

D0577801

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

REFERENCES:
patent: D326318 (1992-05-01), Coup et al.
patent: D384734 (1997-10-01), Ellwood
patent: D418212 (1999-12-01), TerMeer
patent: D418591 (2000-01-01), Birdsell et al.
patent: D426876 (2000-06-01), Rossman et al.
patent: D432222 (2000-10-01), Rymer et al.
patent: D441065 (2001-04-01), Ediger et al.
patent: D457614 (2002-05-01), Chura et al.
patent: D462428 (2002-09-01), Chura et al.
patent: D468627 (2003-01-01), Dampney
patent: D471969 (2003-03-01), Krauss
patent: D509892 (2005-09-01), McLeish
patent: D538415 (2007-03-01), Ching

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