US PATENT SUBCLASS 111 / 30
.~.~.~.~ Plunging

Current as of: June, 1999
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111 /   HD   PLANTING

14  DF  DRILLING {12}
15  DF  .~ Hill-planting machines {5}
25  DF  .~.~ Depositing and marking mechanisms {3}
29  DF  .~.~.~ Driven marker {2}
30.~.~.~.~ Plunging {1}
31  DF  .~.~.~.~.~> Hill covering

DEFINITION

Classification: 111/30

(under subclass 29) Wherein the marking device is a tool which is plunged into the ground at intervals by a movement other than that of rotation, as by reciprocating or vibrating

to and from the ground.