DIFF Subgroup
A01B 3/30 Turn-wrest ploughs
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Ploughs with fixed plough-shares > Tractor-drawn ploughs > Alternating ploughs > Turn-wrest ploughs
CPC:
Ploughs with fixed plough-shares > Tractor-drawn ploughs (A01B3/04 takes precedence) > Alternating ploughs > Turn-wrest ploughs
No child classifications to compare. This is a leaf node in both IPC and CPC.