DIFF Subgroup
E04G 25/06 with parts held together by positive means
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Shores or struts; Chocks > telescopic > with parts held together by positive means
CPC:
Shores or struts (specially designed for use in mines E21D15/00 ); Chocks > telescopic > with parts held together by positive means
Of 4 combined children, 0 exist in both systems.
4 codes are CPC-only extensions.
Child Classifications
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