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United States Patent 2361141

Inventors:
Baron, Woolf
Henry, Hadley Frank
Publication Date:
10/24/1944
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Assignee:
Baron, Woolf
Henry, Hadley Frank
Primary Class:
206/482
Other Classes:
40/534, 206/477, 206/460
International Classes:
G09F5/04; G09F5/00