US PATENT SUBCLASS 111 / 83
.~ Lister units

Current as of: June, 1999
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111 /   HD   PLANTING

14  DF  DRILLING {12}
83.~ Lister units

DEFINITION

Classification: 111/83

(under subclass 14) Planting elements comprising a plow for forming a wide trench and means for drilling material in a relatively narrow drill in the bottom thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

61,

SEE OR SEARCH CLASS

172, Earth Working,

721+, for lister plows.