Title:
Automatic shade
United States Patent 2149481

Inventors:
Bosch, Edward Van
Hoffman, Reinhold H.
Publication Date:
03/07/1939
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Assignee:
Maurice, Van Bosch
Primary Class:
160/168.10P
Other Classes:
188/75, 160/172R, 160/DIG.017, 160/5, 160/DIG.005, 160/176.10P
International Classes:
E05F15/20