US PATENT SUBCLASS 291 / 12
.~ Blast-nozzle cleaners

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

3  DF  FLUID DELIVERY {7}
12.~ Blast-nozzle cleaners

DEFINITION

Classification: 291/12

Movable mechanical cleaning elements, as wires or pins, for removing sand from the blast-nozzles in sand-traps.