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  • Jan 7 1902 U.S. Patent numbers: 690,807, 690,808, 690,809, 690,810 Controlling Electric Motors or Other Electrical Translating Devices.
  • The automatic safety cut off switch or known as a kill switch is automatically included in the construction of many electrical machines. Our water heaters, furnaces, boilers, cars, etc all have kill switches and this man is the father of that invention....  more
  • Jan 1, 1889 U.S. patent# 395,533
    Automatic Safety Cut-Out for Electric Circuits.
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    What did Granville T. Woods patent today
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