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Apparatus for producing sound-records: specification forming part of Letters Patent No. 689,349, dated 1901 December 17

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Apparatus for producing sound-records: specification forming part of Letters Patent No. 689,349, dated 1901 December 17

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Summary

Copy 1.
"Emile Berliner, of Washington, District of Columbia, Assignor to United States Gramophone Company, of Washington, District of Columbia, a corporation of West Virginia."
Diagrams and specification of Emile Berliner's improvements in the apparatus for producing sound-records.

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Date

01/01/1901
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Source

Library of Congress
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Public Domain

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