Title:
Structure of window shades
Document Type and Number:
United States Patent 2509033

Inventors:
Carver, Claude D.
Publication Date:
05/23/1950
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Assignee:
Carver, Claude D.
Primary Class:
160/84.040
Other Classes:
248/269
International Classes:
E06B9/262; E06B9/26
US Patent References:
2049518Venetian blind
2260101Modernistic shade


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