DIFF Subgroup
E21C 35/04 Safety devices (operating in the event of breakage of a haulage cable or chain E21C29/20)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Safety devices
CPC: Safety devices (operating in the event of breakage of a haulage cable or chain E21C29/20)
Full Title
Full titles differ between systems:
IPC:
Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups , or > Safety devices
CPC:
Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00 > Safety devices (operating in the event of breakage of a haulage cable or chain E21C29/20)
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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