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Patent Classification Explorer PCE

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E
E01
E01C
E01C 2201/00
E01C 2201/18

CPC Subgroup Additional Only

E01C 2201/18

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CPC E01C 2201/18

No direct equivalent in IPC

10 CPC-only subgroups

E01C 2201/16 E01C 2201/20

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

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