Title:
Attic access dormer vent
United States Patent 2692548
US Patent References:
/1058695.html
- - 1058695

/1111292.html
- - 1111292

/1264056.html
- - 1264056

/1274197.html
- - 1274197

Skylight
- - 2120060


Inventors:
Fred, Knorr
Publication Date:
10/26/1954
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Assignee:
Fred, Knorr
Primary Class:
454/366
Other Classes:
D23/373
International Classes:
F24F7/02
US Patent References:
2470201Roof ventilator