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PCE
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DIFF Subgroup
B24B 37/20

Lapping pads for working plane surfaces

Introduced: January 2012

Full Title

Full titles differ between systems:

IPC:

Lapping machines or devices; Accessories > Lapping tools > Lapping pads for working plane surfaces

CPC:

Lapping machines or devices; Accessories (B24B3/00 takes precedence) > Lapping tools > Lapping pads for working plane surfaces

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 2012.

Child Classifications

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  • B24B 37/205 CPC only CPC only
  • B24B 37/22 characterised by a multi-layered structure since 2012 IPC+CPC Available in IPC and CPC
  • B24B 37/26 characterised by the shape of the lapping pad surface, e.g. grooved since 2012 IPC+CPC Available in IPC and CPC