Air filter

Details Air filter Air filter

2000-09-18

2002-09-24

Lichtenstein, Lisa (Department: 2911)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Design Patent

active

D0463541

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

REFERENCES:
patent: 3942964 (1976-03-01), Shuler
patent: 4759270 (1988-07-01), Lindeen
patent: 5076924 (1991-12-01), Persson et al.

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