Ventilated ceiling construction
United States Patent 3303771
US Patent References:
Ventilating system
- - 2291220
Ventilating ceiling construction
- - 2807993
Blast room with uniform down-draft ventilation
- - 2912918
Upright refrigerated cabinet with unimpeded front access
- - 2962875
Storing of perishable products
- - 3117427
Ventilating system
- - 2291220
Ventilating ceiling construction
- - 2807993
Blast room with uniform down-draft ventilation
- - 2912918
Upright refrigerated cabinet with unimpeded front access
- - 2962875
Storing of perishable products
- - 3117427
Inventors:
Alexander, Nesher
Henderson, John K.
Sigel, Robert J.
Henderson, John K.
Sigel, Robert J.
Publication Date:
02/14/1967
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Export Citation:
Assignee:
ROBERT J SIGEL INC
Primary Class:
Other Classes:
55/DIG.029, 454/296, 454/237
International Classes:
E04B9/04; F24F7/10
US Patent References:
| 3252400 | Means providing a coordinated air flow in an enclosure |