US PATENT SUBCLASS 165 / DIG 75
.~.~ Agitator structure confines second heat exchange fluid


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165 /   HD   HEAT EXCHANGE

DIG 72  DD  AGITATOR OR IMPELLER MOTOR OPERATED BY FIRST HEAT EXCHANGE FLUID {1}
DIG 73  DD  .~ To agitate or move second heat exchange fluid {2}
DIG 75.~.~ Agitator structure confines second heat exchange fluid