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Thomas Edison's partner, Philip Diehl, made a coil to help power the lightbulb, helping Edison's cause. (jan 5, 1882 – jul 25, 1886)
Added to timeline:
23 Jan 2019
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Lauryn Vengco - HD Timeline
AC vs. DC current
Date:
jan 5, 1882
jul 25, 1886
~ 4 years and 6 months