DIFF Subgroup
B21H 1/14 balls, rollers, cone rollers, or like bodies
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Making articles shaped as bodies of revolution > balls, rollers, cone rollers, or like bodies
CPC:
Making articles shaped as bodies of revolution (rolling tubes B21B17/00 - B21B25/00) > balls, rollers, cone rollers, or like bodies
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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