US PATENT SUBCLASS 62 / 325
.~ External fluid flow reversed

Current as of: June, 1999
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62 /   HD   REFRIGERATION

324.1  DF  REVERSIBLE, I.E., HEAT PUMP {6}
325.~ External fluid flow reversed

DEFINITION

Classification: 62/325

(under subclass 324) Apparatus in which the direction of flow of an external fluid can be reversed relative to the heat absorbing and rejecting means.

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428, for a refrigeration producer means circulating gas over the heat rejector.