DIFF Subgroup
E21C 25/22 Machines slitting solely by one or more cutter chains moving unidirectionally along jibs
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam > Machines slitting solely by one or more cutter chains moving unidirectionally along jibs
CPC:
Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C27/02, E21C27/10, E21C27/18) > Machines slitting solely by one or more cutter chains moving unidirectionally along jibs
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- E21C 25/50 with equipment for cleaning the slit (associated with rotary-rod or rotary-drum machines E21C25/14) IPC+CPC Available in IPC and CPC