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Author(s)
U.S. Patent Office. CommissionerRecipient(s)
Dyer and Seely
Edison, Thomas AlvaOthers Mentioned
Subject(s)
Patent applicationPhonoplex and railroad telegraphy
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A project that narrates Edison's life and work through his documents |
Recipient(s)
Dyer and Seely
Edison, Thomas AlvaOthers Mentioned
The Thomas A. Edison Papers was founded by the following organizations