US PATENT SUBCLASS 111 / 13
.~ Main and auxiliary frame machines

Current as of: June, 1999
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111 /   HD   PLANTING

130  DF  BROADCASTING {3}
13.~ Main and auxiliary frame machines

DEFINITION

Classification: 111/13

(under subclass 130) Implements embodying a main supporting-frame and an auxiliary frame, the latter carrying or unitary with the earth-working elements.