Barrel fan

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Air treatment

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Patent

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D03279472

REFERENCES:
patent: D151311 (1948-10-01), Zeiler et al.
patent: D184469 (1959-02-01), Zeiler et al.
patent: 2884075 (1959-04-01), Poon
patent: 4443965 (1984-04-01), Gie
Phil Rich Fan Mfg. Cat., Outside Cabinet Wall Fan, top left side of page 8, and p. 6, portable blower, top left side of page.
Grainger's Spring '86 Cat., p. 1317, 6-Wing Axial Fan Blades, top left side of page.

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