DIFF Subgroup
A47C 3/22 with balancing device, e.g. by spring, by weight
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats > Chairs or stools with vertically-adjustable seats > with balancing device, e.g. by spring, by weight
CPC:
Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats (A47C1/00, A47C4/00 take precedence) > Chairs or stools with vertically-adjustable seats > with balancing device, e.g. by spring, by weight
No child classifications to compare. This is a leaf node in both IPC and CPC.