US PATENT SUBCLASS 111 / 121
.~.~ Rotating or orbiting opener

Current as of: June, 1999
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111 /   HD   PLANTING

118  DF  LIQUID OR GAS SOIL TREATMENT {6}
120  DF  .~ Drilling machines (i.e., furrow opener) {5}
121.~.~ Rotating or orbiting opener {1}
122  DF  .~.~.~> Power operated

DEFINITION

Classification: 111/121

Rotating or orbiting opener:

(under subclass 120) Apparatus wherein the opening element turns, spins, or revolves about an axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

112+, for a rotary opener associated with plant setting.

157+, for a rotary opener associated with seed depositors.

SEE OR SEARCH CLASS

172, Earth Working,

518+, for a rotating or orbiting earth-working tool, per se.