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Defender Photo Supply : ウィキペディア英語版 | Defender Photo Supply
Defender Photo Supply was an early leader in manufacturing of black & white sheet film, plates, printing paper, and instructional books. Incorporated in 1899 in Rochester, New York, it was purchased by DuPont in 1945.〔Walker, P. "Du Pont." ''The Focal encyclopedia of photography,'' 3rd ed. (1993), p. 231.〕 ==Achievements==
*''Defendol'' - an affordable developing agent created to sidestep developers controlled by German patents *''Chromatone Process'' - Introduced in 1935, is a method of using a collodion stripping paper manufactured by the Defender Company and tricolor toners developed by Francis H. Snyder and Henry W. Rimbach of New York City. *''VC Paper''
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Defender Photo Supply」の詳細全文を読む
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