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US Patent 2599147: Chromiferous monoazo-dyestuffs
US Patent 2599424: Manufacture of an acrylic acid ester
US Patent 2599471: Octahydrophenanthrene carboxylic acid esters and process of making same
US Patent 2599481: Reduction of steroid epoxides
US Patent 2600375: Amino-coumarin-sulfonates
US Patent 2601168: delta 4-17alpha-methyl-3, 20-dioxo-pregnene compounds
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