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PCE
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DIFF Subgroup
E21C 27/16

with means for both slitting and breaking-down

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Machines which completely free the mineral from the seam > by both slitting and breaking-down > breaking-down effected by force or pressure applied to side of slit, e.g. by wedges > with means for both slitting and breaking-down

CPC:

Machines which completely free the mineral from the seam > by both slitting and breaking-down > breaking-down effected by force or pressure applied to side of slit, e.g. by wedges (breaking-down by means inserted in boreholes E21C37/00) > with means for both slitting and breaking-down

No child classifications to compare. This is a leaf node in both IPC and CPC.