Patent classifications
C
CHEMISTRY; METALLURGY
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C14
SKINS; HIDES; PELTS; LEATHER
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C14C
CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
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9/00
Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
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C14C9/02
using fatty or oily materials, e.g. fat liquoring
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