Ventilating fan

Details Ventilating fan Ventilating fan

1997-11-12

1999-05-11

Lichtenstein, Lisa

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

D23371, D23385, 2304

Patent

active

D04097416

REFERENCES:
American Builders, p. 81, Vertical Discharge Fan A and Bathroom Ventilator B, upper right side of page, and lower right side of page respectively. Oct. 1959.

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