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Schyular Skaats Wheeler invented the first electric fan. It had two blades, powered by an electric motor (29 дек 1882 г. – 29 дек 1886 г.)

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Heat Control Devices of the Past

24 ноя 2017

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Дата:

29 дек 1882 г.

29 дек 1886 г.

~ 4 years

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