Title:
Electrical phonograph pick-up and apparatus
United States Patent 1855151


Inventors:
Bartlett, Jones W.
Application Number:
US42335130A
Publication Date:
04/19/1932
Filing Date:
01/25/1930
Assignee:
Bartlett, Jones W.
Primary Class:
Other Classes:
369/137
International Classes:
G11B3/00
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