Ventilation device for building
United States Patent 3322054
US Patent References:
Automatic damper
- - 1767869

Ventilator
- - 2439271

Ventilating apparatus
- - 2569319

Method and apparatus for ventilating poultry and like houses
- - 3000290

Ventilation system
- - 3052176


Inventors:
Lippi, Dominic M.
Publication Date:
05/30/1967
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Assignee:
A R WOOD MFG COMPANY
Primary Class:
454/253
International Classes:
F24F7/02; F24F7/06; F24F11/00