DIFF Subgroup
E21C 27/04 by a single chain guided on a frame with or without auxiliary slitting means
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Machines which completely free the mineral from the seam > solely by slitting > by a single chain guided on a frame with or without auxiliary slitting means
CPC:
Machines which completely free the mineral from the seam > solely by slitting (rods, drums, for same E21C25/10; saws, discs, wheels E21C25/18; chains, chain guides, for same E21C25/28) > by a single chain guided on a frame with or without auxiliary slitting means
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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