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PCE
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DIFF Subgroup
E21B 10/02

Core bits (characterised by wear resisting parts E21B10/48)

Introduced: January 1980

Title

Titles differ between systems:

IPC: Core bits

CPC: Core bits (characterised by wear resisting parts E21B10/48)

Full Title

Full titles differ between systems:

IPC:

Drill bits > Core bits

CPC:

Drill bits (specially adapted for deflecting the direction of boring ; with means for collecting substances E21B27/00) > Core bits (characterised by wear resisting parts E21B10/48)

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 1980.

Child Classifications

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  • E21B 10/04 with core destroying means since 1980 IPC+CPC Available in IPC and CPC
  • E21B 10/06 Roller core bits since 1980 IPC+CPC Available in IPC and CPC