characterised by parts, e.g. cutting elements, which are detachable or adjustable (E21B10/64 takes precedence; for roller bits E21B10/20; for augers E21B10/44)

Introduced: January 1980

Title

Titles differ between systems:

IPC: characterised by parts, e.g. cutting elements, which are detachable or adjustable

CPC: characterised by parts, e.g. cutting elements, which are detachable or adjustable (E21B10/64 takes precedence; for roller bits E21B10/20; for augers E21B10/44)

Full Title

Full titles differ between systems:

IPC:

Drill bits > characterised by parts, e.g. cutting elements, which are detachable or adjustable

CPC:

Drill bits (specially adapted for deflecting the direction of boring ; with means for collecting substances E21B27/00) > characterised by parts, e.g. cutting elements, which are detachable or adjustable (E21B10/64 takes precedence; for roller bits E21B10/20; for augers E21B10/44)

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 2006.

Child Classifications

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E21B 10/627 with plural detachable cutting elements since 2006 IPC+CPC Available in IPC and CPC