E21B 3/045 — | Patent Classification Explorer

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E
E21
E21B
E21B 3/00
E21B 3/02
E21B 3/04
E21B 3/045

CPC Subgroup

E21B 3/045

Full Title

Rotary drilling > Surface drives for rotary drilling > Rotary tables

CPC E21B 3/045

No direct equivalent in IPC

1 CPC-only subgroup

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

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