DIFF Subgroup
E21D 15/14 Telescopic props (general means for fixing telescopic parts together )
Introduced: September 1968
Title
Titles differ between systems:
IPC: Telescopic props
CPC: Telescopic props (general means for fixing telescopic parts together )
Full Title
Full titles differ between systems:
IPC:
Props; Chocks > Telescopic props
CPC:
Props (in the building art E04G25/00); Chocks > Telescopic props (general means for fixing telescopic parts together )
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- E21D 15/15 Means counteracting entry of dirt; Built-in cleaning devices +1 CPC IPC+CPC Available in IPC and CPC
- E21D 15/16 with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure IPC+CPC Available in IPC and CPC
- E21D 15/28 with parts held relatively to each other by friction or gripping +1 CPC IPC+CPC Available in IPC and CPC
- E21D 15/44 Hydraulic, pneumatic, or hydraulic-pneumatic props +1 CPC IPC+CPC Available in IPC and CPC