DIFF Subgroup
E21C 35/16 by making use of the timbering, filling, or other supports
Introduced: September 1968
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 > Guiding the machine > by making use of the timbering, filling, or other supports
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 > Guiding the machine > by making use of the timbering, filling, or other supports
No child classifications to compare. This is a leaf node in both IPC and CPC.