Combined ventilating and purging blower

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified

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D23151

Patent

active

D02912430

REFERENCES:
patent: D242459 (1976-11-01), Gerst
patent: D262235 (1981-12-01), Hamilton
patent: D269115 (1983-05-01), Gomis
patent: 3096933 (1963-07-01), Bora
patent: 4612909 (1986-09-01), Lee
Coppus catalogue 1985, p. 22, "Coppus RF Air Driven Reaction Fan".
LaFrance Equip. Co. catalogue (1978), p. 83, "Smoke Ejector" Fan.

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