Title:
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United States Patent 1809688


Inventors:
Gordon, Goudey Enos
Albert, Stevens David
Chapman, Crafts Leslie
Application Number:
US20947427A
Publication Date:
06/09/1931
Filing Date:
07/30/1927
Assignee:
Gordon, Goudey Enos
Albert, Stevens David
Chapman, Crafts Leslie
Primary Class:
International Classes:
G09F13/14
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