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D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
D21B1/00—Fibrous raw materials or their mechanical treatment
D21B1/02—Pretreatment of the raw materials by chemical or physical means
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FR811020D1935-12-241935-12-24Table de triage pour matières telles que chiffons, vieux papiers et autres déchets utilisés en papeterie
ExpiredFR811020A
(fr)
Pile désagrégeant et assortissant en continu, notamment, pour le traitement des vieux papiers et des cassés et dèchets des machines à papier et à carton