Ventilating fan

Details Ventilating fan Ventilating fan

1996-11-26

1997-12-16

Lichtenstein, Lisa

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

D23370, D23385, 2304

Patent

active

D03878597

REFERENCES:
Progress Manufacturing Co, Inc. Adv. Brochure, p. 2, Blower Fan A, upper right side of page, p. 3.
Blower Fan B, top left side of page.
House & Home, Mar. 1960, p. 289, Ventrola Bathroom Ventilating Fan, top left side of page.

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