DIFF Subgroup
E21C 35/183 with inserts or layers of wear-resisting material
Introduced: January 1995
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 > Mining picks; Holders therefor > with inserts or layers of wear-resisting material
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 > Mining picks; Holders therefor (planing knives E21C27/44) > with inserts or layers of wear-resisting material
Of 4 combined children, 0 exist in both systems.
4 codes are CPC-only extensions.
Child Classifications
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