. . . . ""@en . . "Russian Empire, United States"@en . "Boston, Massachusetts, USA"@en . . "George de Bothezat (, , June 7, 1882 \u2013 February 1, 1940) was a Russian American engineer, businessman and pioneer of helicopter flight."@en . "George de Bothezat"@en . . . . . . "George de Bothezat (, , June 7, 1882 \u2013 February 1, 1940) was a Russian American engineer, businessman and pioneer of helicopter flight."@en . "University of Paris"@en . . "1882-06-07"^^ . . "Saint Petersburg"@en . . . . "1940-02-01"^^ . "George de Bothezat"@en . . . . . .