Title:
Window shade
Document Type and Number:
United States Patent 1764789
Inventors:
John, Heald
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Publication Date:
06/17/1930
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Referenced by:
Export Citation:
Assignee:
John, Heald
Primary Class:
Other Classes:
160/196.100, 160/121.100
International Classes:
E06B9/36; E06B9/26