Illumination and display device
United States Patent 2095648
Inventors:
John, Oftedahl
Publication Date:
10/12/1937
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Assignee:
John, Oftedahl
Primary Class:
Other Classes:
428/15, 362/121, 428/21, 428/11, 428/3
International Classes:
F21S8/00; G09F13/26; G09F13/00