DIFF Subgroup
B23F 13/02 Making worms of cylindrical shape
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Making worms by methods essentially requiring the use of machines of the gear-cutting type > Making worms of cylindrical shape
CPC:
Making worms by methods essentially requiring the use of machines of the gear-cutting type (making screw-thread B23G) > Making worms of cylindrical shape
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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