US PATENT SUBCLASS 291 / 21
.~ Steam

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

19  DF  HEATERS {2}
21.~ Steam

DEFINITION

Classification: 291/21

Steam chambers and pipes for heating sand and sand-delivery

pipes by radiation.

SEE OR SEARCH CLASS

222, Dispensing,

334, for fluid motor operated impellers for dispensers.