DIFF Subgroup
A63C 5/04 Structure of the surface thereof
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Skis or snowboards > Structure of the surface thereof
CPC:
Skis or snowboards (sledges with runners, e.g. ski-bobs, B62B13/00; runners for sledges B62B17/02; runners for carrying wheeled vehicles to facilitate travel on snow or ice B62B19/00) > Structure of the surface thereof
CPC subdivides this area 2x more granularly than IPC with 5 additional codes.
5 codes are CPC-only extensions.
IPC defines codes here since 1985.
Child Classifications
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