DIFF Subgroup
E21D 15/34 by axially- moving balls, rollers, or the like
Introduced: September 1968
Title
Titles differ between systems:
IPC: by axially-moving balls, rollers, or the like
CPC: by axially- moving balls, rollers, or the like
Full Title
Full titles differ between systems:
IPC:
Props; Chocks > Telescopic props > with parts held relatively to each other by friction or gripping, e.g. using wedges > by axially-moving balls, rollers, or the like
CPC:
Props (in the building art E04G25/00); Chocks > Telescopic props (general means for fixing telescopic parts together ) > with parts held relatively to each other by friction or gripping > by axially- moving balls, rollers, or the like
No child classifications to compare. This is a leaf node in both IPC and CPC.