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Three things Granville T. Woods invented were the steam boiler furnace, thee Synchronoud Multiplex Railway Telegraph, and telegraphony, the combination of the telegraph and the telephone.

Granville Woods received over 60 patents. His major inventions included an improved telephone transmitter, an electrical apparatus for transmitting messages, an induction telegraph system, a galvanic battery, an automatic safety cut-out for electric currents, an electric railway supply system, a regulator for electric motors, an egg incubator, and an automatic air brake.

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Vern Kovacek

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2y ago
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Q: What did Granville T Woods invented?
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