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Publication date
Application grantedgrantedCritical
Publication of NL64787CpublicationCriticalpatent/NL64787C/xx
D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
D01C3/00—Treatment of animal material, e.g. chemical scouring of wool
C—CHEMISTRY; METALLURGY
C14—SKINS; HIDES; PELTS; LEATHER
C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING