US PATENT SUBCLASS 172 / 713
.~ Tooth


Current as of: June, 1999
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172 /   HD   EARTH WORKING

681  DF  TOOL, STANDARD OR CONNECTION {32}
713.~ Tooth


DEFINITION

Classification: 172/713

(under subclass 681) Apparatus comprising a generally elongated earth working element having an earth working portion and a standard to support it in earth working position in which the earth working portion is no longer in lateral or longitudinal extent than the standard.

(1) Note. A disclosure of an enlarged lateral or longitudinal portion is enough to disqualify a patent for

classification under this definition regardless of the claimed subject matter.

SEE OR SEARCH THIS CLASS, SUBCLASS:

160, for laterally spaced like tools and an intermediate diverse tool at least one of which comprises a spike tooth.

173, for a smooth surface earth roller combined with earth working teeth.

198, for diverse tools following the same path, one of which comprises teeth. SEE OR SEARCH CLASS

56, Harvesters,

400, for a horse rake tooth.

111, Planting,

154, for a tooth- or tine-type furrow opener claimed in combination with a planting machine.