Air damper assembly including sidewall sealing means
United States Patent 3381601

Inventors:
Mccabe, Francis T.
Publication Date:
05/07/1968
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Assignee:
M & T ENGINEERING COMPANY
Primary Class:
454/318
Other Classes:
454/359, 49/91.100, 49/90.100, 454/325
International Classes:
F24F13/15
US Patent References:
3191241Damper blades and means for pivoting same
3301164Hinged polypropylene louver set
3313226Blade mounting means for air control apparatus