DIFF Subgroup
A01B 3/421 with a headstock frame made in one piece
Introduced: July 1974
Full Title
Ploughs with fixed plough-shares > Ploughs mounted on tractors > Alternating ploughs > Turn-wrest ploughs > with a headstock frame made in one piece
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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