Roof edge ventilator

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

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D02775026

REFERENCES:
patent: D271713 (1983-12-01), Hieks
patent: 2388759 (1945-11-01), Moore
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patent: 3949657 (1976-04-01), Sells
patent: 4007672 (1977-02-01), Luckey
patent: 4102090 (1978-07-01), Anguish
patent: 4280399 (1981-07-01), Cunning

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