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PCE
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DIFF Subgroup
E21B 10/60

characterised by conduits or nozzles for drilling fluids (for roller bits E21B10/18; for percussion drill bits E21B10/38)

Introduced: January 1980

Title

Titles differ between systems:

IPC: characterised by conduits or nozzles for drilling fluids

CPC: characterised by conduits or nozzles for drilling fluids (for roller bits E21B10/18; for percussion drill bits E21B10/38)

Full Title

Full titles differ between systems:

IPC:

Drill bits > characterised by conduits or nozzles for drilling fluids

CPC:

Drill bits (specially adapted for deflecting the direction of boring ; with means for collecting substances E21B27/00) > characterised by conduits or nozzles for drilling fluids (for roller bits E21B10/18; for percussion drill bits E21B10/38)

CPC subdivides this area 3x more granularly than IPC with 2 additional codes.

2 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2006.

Child Classifications

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