Title:
Self-luminous article
Document Type and Number:
United States Patent 2155449
Inventors:
Seaman, Ellsworth F.
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Publication Date:
04/25/1939
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Referenced by:
Export Citation:
Assignee:
Seaman, Ellsworth F.
Primary Class:
Other Classes:
250/462.100
International Classes:
F21V9/16; G09F13/14; G09F13/16; H01J65/08; F21V9/00; H01J65/00