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Mikhail Osipovich Dolivo-Dobrovolsky (Russian: Михаи́л О́сипович Доли́во-Доброво́льский; German: Michail von Dolivo-Dobrowolsky or Michail Ossipowitsch Doliwo-Dobrowolski; 2 January [O.S. 21 December 1861] 1862 – 15 November [O.S. 3 November] 1919) was a Russian Empire-born engineer, electrician, and inventor of Polish-Russian origins, active in the ...
They then formed the Chicago Edison Company, which took over all of Western Edison's business on July 2, 1887. [4] Chicago Edison's first central generating station, designed by chief engineer Frederick Sargent , opened at 139 (later 120) West Adams Street in August, 1888. [ 5 ]
This is an accepted version of this page This is the latest accepted revision, reviewed on 18 December 2024. Classified advertisements website Craigslist Inc. Logo used since 1995 Screenshot of the main page on January 26, 2008 Type of business Private Type of site Classifieds, forums Available in English, French, German, Dutch, Spanish, Italian, Portuguese Founded 1995 ; 29 years ago (1995 ...
The demonstration lighting system was driven by a hydroelectric generator that produced 500 volts AC, which was then stepped down to 100 volts to light incandescent bulbs in homes and businesses. That same year, Westinghouse founded the " Westinghouse Electric & Manufacturing Company "; [ 18 ] in 1889 he renamed it the "Westinghouse Electric ...
U.S. patent 2,475,841 was issued on July 12, 1949 – Automatic refrigeration system for long-haul trucks. U.S. patent 2,475,842 was issued on July 12, 1949 – Starter generator. U.S. patent 2,475,843 was issued on July 12, 1949 – Means operated by a starter generator for cooling a gas engine.
"Egg of Columbus" demonstration at the 1893 Columbian Exposition. Tesla's Egg of Columbus was a device exhibited in the Westinghouse Electric display at the 1893 Chicago World's Columbian Exposition to explain the rotating magnetic field that drove the new alternating current induction motors designed by inventor Nikola Tesla by using that magnetic field to spin a copper egg on end.
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Zenith introduced the first portable radio in 1924, [5] the first mass-produced AC radio in 1926, [5] and push-button tuning in 1927. [5] It added automobile radios in the 1930s with its Model 460, promoting the fact that it needed no separate generator or battery, selling at US$59.95. [6]
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