DIFF Subgroup
C03B 21/04 by punching out
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Severing glass sheets, tubes, or rods while still plastic > by punching out
CPC:
Severing glass sheets, tubes or rods while still plastic > by punching out
No child classifications to compare. This is a leaf node in both IPC and CPC.