Schering-Kahlbaum A.G.
Patent: DE508893 , 1927 ;

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Schering-Kahlbaum A.G.
Patent: DE521620 , 1927 ;

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Schering-Kahlbaum A.G.
Patent: DE515112 , 1928 ;

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Schering-Kahlbaum A.G.
Patent: DE528150 , 1927 ;

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Schering-Kahlbaum A.G.
Patent: DE514417 , 1927 ;

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Schering-Kahlbaum A.G.
Patent: DE514594 , 1927 ;

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Schering-Kahlbaum A.G.
Patent: DE512881 , 1927 ;

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Schering-Kahlbaum A.G.
Patent: DE508095 , 1927 ;

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Schering-Kahlbaum A.G.
Patent: DE508892 , 1927 ;

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Schering-Kahlbaum A.G.
Patent: DE506044 , 1926 ;

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Schering-Kahlbaum A.G.
Patent: DE512719 , 1926 ;

The Procter and Gamble Company
Patent: US2005/25795 A1, 2005 ;
Location in patent: Page/Page column 17-18 ;