Air Filter

Details Air Filter Air Filter

1997-11-12

1998-11-24

Lichtenstein, Lisa

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

2304

Patent

active

D04016840

REFERENCES:
patent: D381741 (1997-07-01), Johnson
patent: 2957235 (1960-10-01), Steinberg
patent: 3458050 (1969-07-01), Cooper
patent: 3546853 (1970-12-01), Claar
patent: 4560477 (1985-12-01), Moldow
patent: 5106397 (1992-04-01), Jaroszczyk et al.
patent: 5597479 (1997-01-01), Johnson

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