CPC Subgroup
E21C 35/183 with inserts or layers of wear-resisting material
Full Title
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
4 direct subcodes
Child Classifications
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