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Patent Classification Explorer PCE

Search Classifications

Search for IPC and CPC classification codes or keywords

C
C09
C09B
C09B 25/00

CPC Main Group

C09B 25/00

Quinophthalones

CPC C09B 25/00

IPC Equivalent: C09B 25/00

1 CPC-only subgroup

C09B 23/00 C09B 26/00

Data: WIPO (IPC), EPO/USPTO (CPC) — CC BY 4.0

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