DIFF Subgroup
B21H 7/18 grooved pins; Rolling grooves, e.g. oil grooves, in articles
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Making articles not provided for in groups , e.g. agricultural tools, dinner forks, knives, spoons > grooved pins; Rolling grooves, e.g. oil grooves, in articles
CPC:
Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons (nails, pins B21G3/30) > grooved pins; Rolling grooves, e.g. oil grooves, in articles
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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