DIFF Subgroup
B21F 45/20 of spring hooks; of spring safety hooks
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Wire-working in the manufacture of other particular articles > of devices for fastening or securing purposes > of spring hooks; of spring safety hooks
CPC:
Wire-working in the manufacture of other particular articles (of pins, needles, nails, hairpins B21G; of chains B21L) > of devices for fastening or securing purposes > of spring hooks; of spring safety hooks
No child classifications to compare. This is a leaf node in both IPC and CPC.