Ventilating heater

Details Ventilating heater Ventilating heater

1989-09-19

1991-02-05

Gandy, James M.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Portable

D23382

Patent

active

D03144259

REFERENCES:
patent: 2158605 (1939-05-01), Wiegand
patent: 2456881 (1948-12-01), Leather
patent: 3976393 (1976-08-01), Larson
Grainger's Spring '86 Cat., p. 1353, Hog House Exhaust Fan, outside view, top left side of page.

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