Title:
Sound reproducing system
Document Type and Number:
United States Patent 2361490
Inventors:
Mueller, William A.
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Publication Date:
10/31/1944
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Referenced by:
Export Citation:
Assignee:
RCA CORP
Primary Class:
Other Classes:
369/47.250
International Classes:
G11B7/00; H04R1/20; H04S3/00