US PATENT SUBCLASS 111 / 163
.~.~.~ Disk

Current as of: June, 1999
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111 /   HD   PLANTING

14  DF  DRILLING {12}
149  DF  .~ Furrow opener {7}
157  DF  .~.~ Rotary opener {2}
163.~.~.~ Disk {3}
164  DF  .~.~.~.~> Plural cooperating disk openers {2}
167  DF  .~.~.~.~> Flat
168  DF  .~.~.~.~> Dished {1}

DEFINITION

Classification: 111/163

Disk:

(under subclass 157) Apparatus wherein the rotary opener is a generally circular, plate-like member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

135+, for rotating openers with gauge means mounted on an auxiliary frame.