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This Day in Patent History - On February 19, 1878, Thomas Edison received a patent for the phonograph

On February 19, 1878, Thomas Edison received a patent for the phonograph. The photo shows Thomas Edison with his patented phonograph.The device could mechanically record…

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Phonograph

  Patent Information Publication number: US200521 A Patent Title: Improvement in phonograph or speaking machines Publication type: Grant Publication date: Feb 19, 1878 Filing date:…

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This Day in Patent History - On November 29, 1881, Francis Blake was granted a patent for the speaking phone

On November 29, 1881, Francis Blake was granted a patent for the speaking phone. Blake was elected a member of the American Antiquarian Society in…

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