US PATENT SUBCLASS 291 / 30
.~.~ Hopper

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

25  DF  SAND FEEDERS {8}
28  DF  .~ Oscillatory {3}
30.~.~ Hopper

DEFINITION

Classification: 291/30

The entire sand-hopper is tilted to cause a discharge of the sand.