US PATENT SUBCLASS 37 / 283
.~.~.~ Adjustable about central vertical hinge

Current as of: June, 1999
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37 /   HD   EXCAVATING

196  DF  SNOW OR ICE REMOVING OR GROOMING BY PORTABLE DEVICE {16}
266  DF  .~ Scraper blade {5}
279  DF  .~.~ Diagonally oriented {5}
283.~.~.~ Adjustable about central vertical hinge

DEFINITION

Classification: 37/283

Adjustable about central vertical hinge:

(under subclass 279) Apparatus including means for attaching the moldboard to carriage, the means comprising a pivotal connection having a generally vertical axis at the longitudinal midpoint of the moldboard, about which the mold board can be angularly adjusted.

SEE OR SEARCH CLASS

172, Earth Working,

792+, and 820+ for an earthworking blade which is adjustable about a central, vertical axis.