DIFF Subgroup
E21D 21/02 having means for indicating tension (screwed connections specially modified for indicating tensile load F16B31/02)
Introduced: September 1968
Title
Titles differ between systems:
IPC: having means for indicating tension
CPC: having means for indicating tension (screwed connections specially modified for indicating tensile load F16B31/02)
Full Title
Full titles differ between systems:
IPC:
Anchoring-bolts for roof, floor, or shaft-lining protection > having means for indicating tension
CPC:
Anchoring-bolts for roof, floor , or shaft-lining protection (; dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose F16B13/00 ) > having means for indicating tension (screwed connections specially modified for indicating tensile load F16B31/02)
No child classifications to compare. This is a leaf node in both IPC and CPC.