CPC Subgroup
A24D 3/14 of organic materials as additive (of ion exchange materials A24D3/12)
Full Title
Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes > Use of materials for tobacco smoke filters > of organic materials as additive (of ion exchange materials A24D3/12)
1 direct subcode
Child Classifications
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