Air heater

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

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Patent

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D03138429

REFERENCES:
patent: D87100 (1932-06-01), Booth
patent: D97003 (1935-09-01), Steingruber
patent: D227367 (1973-06-01), Schaefer
patent: 1928270 (1933-09-01), Shirley
patent: 2967051 (1961-01-01), Mobley
patent: 4737616 (1988-04-01), Wen-Ying
Markel Electric Products, Inc., p. 3, Hi-Wattage Heetaire, right middle side of page.
McGraw-Edison Co. Adv. Brochure, p. 2, Heavy Duty Heater Model H940, lower left side of page.
Home Furnishings Daily, 8/5/65, p. 26, Automatic Fan Heater, bottom left side of page.

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