Title:
Roller window screen
Document Type and Number:
United States Patent 2462520

Inventors:
William, Marbach
Publication Date:
02/22/1949
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Assignee:
William, Marbach
Primary Class:
160/100
International Classes:
E06B9/54; E06B9/52
US Patent References:
0098601
0901067
0933245
1069251


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