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C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
C05B1/10—Apparatus for the manufacture of superphosphates
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FR771070D1933-06-241933-06-24Appareil continu pour la fabrication des superphosphates et produits analogues
ExpiredFR771070A
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