DIFF Subgroup
E21D 15/58 Devices for setting props or chocks
Introduced: September 1968
Title
Titles differ between systems:
IPC: Devices for setting props
CPC: Devices for setting props or chocks
Full Title
Full titles differ between systems:
IPC:
Props; Chocks > Devices for setting props
CPC:
Props (in the building art E04G25/00); Chocks > Devices for setting props or chocks
Of 5 combined children, 0 exist in both systems.
3 codes are CPC-only extensions, 2 exist only in IPC.
Child Classifications
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