US PATENT SUBCLASS 172 / 169
.~ Including tool rotatable about vertical axis

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

133  DF  DIVERSE TOOLS {29}
169.~ Including tool rotatable about vertical axis

DEFINITION

Classification: 172/169

(under subclass 133) Apparatus in which one of the earth working elements is of the rolling or rotating type and rotates about an axis which is substantially vertical.

(1) Note. The axis may deviate from the vertical by as much as 45 deg..

SEE OR SEARCH THIS CLASS, SUBCLASS:

522+, for tools which rotate about a substantially vertical axis.