Title:
Combined motion picture projector and sound reproducing apparatus
United States Patent 1854219

Inventors:
Owens, Freeman H.
Publication Date:
04/19/1932
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Assignee:
OWENS DEV CORP
Primary Class:
369/6
Other Classes:
352/131, 369/11, 352/1, 369/4
International Classes:
G03B31/00