Find number abc
If a0aaa + 77c69 = 1ba3b7 find number abc. Multiple solutions may exist.Correct answers: 2
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Frank SpragueDied 25 Oct 1934 at age 77 (born 25 Jul 1857).Frank (Julian) Sprague was an American engineer, inventor, and a pioneer in electric railway transportation. He started his career at sea in the U.S. Navy (1878). Later, he worked at the Brooklyn Navy Yard making plans for incadescent electric lamps on navy vessels, which led to joining Edison at Menlo Park (1883) He formed the Sprague Electric Railway and Motor Company in 1884, and became known as "the father of electric railway traction." when he installed the first U.S. electric trolley system (Richmond, Va., 1887). Edison took over this company in 1892. Sprague earned many patents, many for railway applications and diverse ideas such as electric toasters, electric signs, electric elevators and naval weaponry. |