US PATENT SUBCLASS 111 / 58
.~.~.~.~ V-shaped

Current as of: June, 1999
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111 /   HD   PLANTING

14  DF  DRILLING {12}
52  DF  .~ Frame and planting-element arrangement {4}
53  DF  .~.~ Sectional main frame {2}
57  DF  .~.~.~ Extensible {1}
58.~.~.~.~ V-shaped

DEFINITION

Classification: 111/58

(under subclass 57) Devices wherein the sections of the extensible frame mounted to move upon vertical pivots and movable toward and from each other at one end only of the frame.