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CPC Subgroup
C10G 21/27

Organic compounds not provided for in a single one of groups C10G21/14 - C10G21/26

Full Title

Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents (C10G17/00, C10G19/00 take precedence) > characterised by the solvent used > Organic compounds only > Organic compounds not provided for in a single one of groups C10G21/14 - C10G21/26