US PATENT SUBCLASS 111 / 20
.~.~.~ Sectional main 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}
20.~.~.~ Sectional main frame {1}
21  DF  .~.~.~.~> Break joint

DEFINITION

Classification: 111/20

(under subclass 18) The frame being in a plurality of sections adjoining in the supporting of the total load placed upon the machine.