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Title:
Device for cutting grooves in phonograph records
United States Patent 1801404
Inventors:
Will, Carl H.
Publication Date:
04/21/1931
Export Citation:
Click for automatic bibliography generation
Assignee:
Orville, Caesar S.
Carl, Wickman E.
Primary Class:
33/27.01
Other Classes:
369/231
International Classes:
G11B3/00
View Patent Images:
Download PDF 1801404
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