Talking - Machine : specification of Letter Patent No. 814,786, patented 1906 March 13

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Talking - Machine : specification of Letter Patent No. 814,786, patented 1906 March 13

description

Summary

"Eldridge Johnson of Philadelphia, Pennsylvania, assignor to Victor Talking Machine Company, a corporation of New Jersey."
Diagram and specifications detailing Eldridge Johnson's improvements to the Talking - Machine.

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Date

01/01/1906
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Source

Library of Congress
copyright

Copyright info

Public Domain

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