US PATENT SUBCLASS 299 / 39.9
.~.~.~ And having rotatable cutting element

Current as of: June, 1999
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299 /   HD   MINING OR IN SITU DISINTEGRATION OF HARD MATERIAL

29  DF  HARD MATERIAL DISINTEGRATING MACHINES {17}
36.1  DF  .~ Floor-working {3}
39.1  DF  .~.~ Rotary cutter {6}
39.9.~.~.~ And having rotatable cutting element

DEFINITION

Classification: 299/39.9

And having rotatable cutting element:

(under subclass 39.1) Rotary cutter in which the bottom surface breaking up device is mounted to turn relative to the axis.