Frame structure
United States Patent 3184802
US Patent References:
/0286243.html
- - 0286243

Frame
- - 1892492

Windows
- - 2719341


Inventors:
William, Levy
Publication Date:
05/25/1965
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Assignee:
William, Levy
Primary Class:
52/656.100
Other Classes:
D25/61, 160/135
International Classes:
E06B7/28; E06B7/00
Foreign References:
GB229079A
GB361114A