US PATENT SUBCLASS 291 / 6
.~ Movable trap valve

Current as of: June, 1999
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291 /   HD   TRACK SANDERS

3  DF  FLUID DELIVERY {7}
6.~ Movable trap valve

DEFINITION

Classification: 291/6

The sand-blast trap has a movable valve for determining which delivery-pipe is to be used and the other cut out.