Air filter for attachment to a fan grill

Details Air filter for attachment to a fan grill Air filter for attachment to a fan grill

1994-02-04

1995-06-27

Lichtenstein, Lisa P.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

D23411

Patent

active

D03598004

REFERENCES:
patent: 3966442 (1976-06-01), Waters
patent: 4477272 (1984-10-01), Hollis et al.
patent: 4750863 (1988-06-01), Scoggins
patent: 4889543 (1989-12-01), Burt
patent: 5094676 (1992-03-01), Karbacher

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