Combined filter element and frame therefor

Details Combined filter element and frame therefor Combined filter element and frame therefor

1998-04-06

2000-05-16

Lichtenstein, Lisa

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

D23355, 2304

Patent

active

D0425189&

REFERENCES:
patent: 3807150 (1974-04-01), Maracle
patent: 3878594 (1975-04-01), Minor, Jr. et al.
patent: 3966646 (1976-06-01), Noakes et al.
patent: 4289513 (1981-09-01), Brownhill et al.
patent: 4322231 (1982-03-01), Hilzendeger et al.
patent: 4410427 (1983-10-01), Wydeven
patent: 4430223 (1984-02-01), Miyakawa et al.
patent: 4439231 (1984-03-01), Taki et al.
patent: 4589983 (1986-05-01), Wydevan
patent: 5102436 (1992-04-01), Grabowski
patent: 5304351 (1994-04-01), Tanaka et al.

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