Patent classifications
C
CHEMISTRY; METALLURGY
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C08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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89/00
Compositions of proteins; Compositions of derivatives thereof
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C08L89/04
Products derived from waste materials, e.g. horn, hoof or hair
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