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James Edward Maceo West – Electret Microphone Inventor – African American History Month 2015 #BlackHistoryMonth « Adafruit Industries – Makers, hackers, artists, designers and engineers!
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David Edward Hughes 1831 1900 Anglo-American Inventor Practical Experimenter And Professor Of Music Also Known
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Amazon.com: Emile Berliner (1851-1929) Ngerman-Born American Inventor Berliner With An Early Version Of The Microphone Photograph 1927 Poster Print by (24 x 36): Posters & Prints
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