DIFF Subgroup
E04G 25/04 telescopic
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Shores or struts; Chocks > telescopic
CPC:
Shores or struts (specially designed for use in mines E21D15/00 ); Chocks > telescopic
CPC subdivides this area 3x more granularly than IPC with 3 additional codes.
3 codes are CPC-only extensions.
Note: 3 CPC extensions are marked as secondary classification only.
Child Classifications
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- E04G 25/08 with parts held relatively to each other by friction or gripping IPC+CPC Available in IPC and CPC