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・ Leon Jay Williams
・ Leon Jeanne
・ Leon de Geus
・ Leon de Kogel
・ Leon De La Mothe
・ Leon De Lathouwer
・ Leon De Meyere
・ Leon de Winter
・ Leon de Wolff
・ Leon Despres
・ Leon Dewan
・ Leon Dexter Batchelor
・ Leon Dombrowski
・ Leon Donohue
・ Leon Douglas
Leon Douglass
・ Leon Draisaitl
・ Leon Drolet
・ Leon Drysdale
・ Leon Dubinsky
・ Leon Dubrawski
・ Leon Dubus
・ Leon Dunne
・ Leon Duray
・ Leon Durham
・ Leon Dycian
・ Leon Dănăilă
・ Leon E. Dessez
・ Leon E. Giuffreda
・ Leon E. Salomon


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Leon Douglass : ウィキペディア英語版
Leon Douglass

Leon Forrest Douglass (March 12, 1869 – September 7, 1940) was an American inventor and co-founder of the Victor Talking Machine Company who registered approximately fifty patents, mostly for film and sound recording techniques.
==Life and professional career==
Douglass was born in rural Nebraska, near present-day Syracuse. His parents were Seymour James Douglass, a millwright and carpenter, and Mate (Fuller) Douglass. He attended grammar school in Lincoln, Nebraska, was apprenticed to a printer, at eleven was working as a telegraph messenger, and by seventeen was telephone exchange manager for the Nebraska Telephone Company in Seward.〔Gracyk, Tim. ("Leon F. Douglass: Inventor and Victor's First Vice-President" ) Accessed July 13, 2008.〕

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