Title:
Material for controlling illumination
Document Type and Number:
United States Patent 1937342
Inventors:
Harold, Higbie Henry
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Publication Date:
11/28/1933
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Referenced by:
Export Citation:
Assignee:
Harold, Higbie Henry
Primary Class:
Other Classes:
160/84.050, 160/236
International Classes:
E06B9/262; E06B9/24; E06B9/26