DIFF Subgroup
B21D 28/10 Incompletely punching in such a manner that the parts are still coherent with the work
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Shaping by press-cutting; Perforating > Punching blanks or articles with or without obtaining scrap; Notching > Incompletely punching in such a manner that the parts are still coherent with the work
CPC:
Shaping by press-cutting; Perforating > Punching blanks or articles with or without obtaining scrap (cutting nails or pins from strips or sheet material B21G3/26); Notching > Incompletely punching in such a manner that the parts are still coherent with the work
No child classifications to compare. This is a leaf node in both IPC and CPC.