Standard Oil photograph

Standard Oil

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FoundedCleveland
Ohio
United States
Successor34 successor entities
HeadquartersNew York
New York
United States
Ceased operations 1911
Number of employees60,000 (1909)
Founders John D. Rockefeller
Henry Flagler
Henry Huttleston Rogers
William Rockefeller
Date of Reg.
Date of Upd.
ID1355641
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About Standard Oil


Standard Oil Co. Inc. was an American oil producing, transporting, refining, marketing company, and monopoly. Established in 1870 by John D. Rockefeller and Henry Flagler as a corporation in Ohio, it was the largest oil refiner in the world of its time.

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