US PATENT SUBCLASS 68 / 231
.~.~.~ Of rollers

Current as of: June, 1999
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68 /   HD   TEXTILES: FLUID TREATING APPARATUS

213  DF  IMPLEMENTS {6}
223  DF  .~ Washboards {3}
226  DF  .~.~ Rubbing surfaces {4}
231.~.~.~ Of rollers

DEFINITION

Classification: 68/231

Washboards wherein the scrubbing surface is made up of a series of rollers.