Air-filter

Details Air-filter Air-filter

1986-07-03

1988-05-10

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Patent

active

D02956748

REFERENCES:
patent: D221850 (1971-09-01), Anderson
patent: D236265 (1975-08-01), Dussardier
patent: 2955712 (1960-10-01), Gutkowski
patent: 3289847 (1966-12-01), Rothemund
patent: 3297160 (1967-01-01), Humbert, Jr.

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