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Patent Classification Explorer PCE

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Search for IPC and CPC classification codes or keywords

E
E21
E21B
E21B 11/00
E21B 11/04

CPC Subgroup

E21B 11/04

Boring grabs

Full Title

Other drilling tools > Boring grabs

CPC E21B 11/04

IPC Equivalent: E21B 11/04

1 CPC-only subgroup

E21B 11/02 E21B 11/06

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

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