US PATENT SUBCLASS 111 / 22
.~.~.~ Main and auxiliary frame

Current as of: June, 1999
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111 /   HD   PLANTING

14  DF  DRILLING {12}
15  DF  .~ Hill-planting machines {5}
18  DF  .~.~ Frame and planting-element arrangement {3}
22.~.~.~ Main and auxiliary frame {2}
23  DF  .~.~.~.~> Rotary-marker operator
24  DF  .~.~.~.~> Hopper-carrying auxiliary

DEFINITION

Classification: 111/22

(under subclass 18) Devices embodying a main supporting section and an auxiliary section having movement with relation to each other, the main frame being designed to support or carry the auxiliary frame.

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19,