DIFF Subgroup
E21B 10/627 with plural detachable cutting elements
Introduced: January 2006
Full Title
Full titles differ between systems:
IPC:
Drill bits > characterised by parts, e.g. cutting elements, which are detachable or adjustable > with plural detachable cutting elements
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) > with plural detachable cutting elements
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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