Air filter

Details Air filter Air filter

1998-09-01

2001-11-20

Lichtenstein, Lisa (Department: 2911)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Design Patent

active

D0450826

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

REFERENCES:
patent: 3653189 (1972-04-01), Miyake et al.
patent: 5248323 (1993-09-01), Stevenson

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