US PATENT SUBCLASS 111 / 123
.~.~ Chisel 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}
123.~.~ Chisel opener

DEFINITION

Classification: 111/123

Chisel opener:

(under subclass 120) Apparatus wherein the opening element is specifically disclosed as working deep in the soil and having such a configuration that it merely lifts the soil and does not shift it laterally of the line of the furrow.

SEE OR SEARCH THIS CLASS, SUBCLASS:

156, for a chisel opener used with a seed planter.

SEE OR SEARCH CLASS

172, Earth Working,

699+, for chisel type openers, per se.