US PATENT SUBCLASS 165 / 62
.~.~ Refrigerating system conversion

Current as of: June, 1999
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165 /   HD   HEAT EXCHANGE

58  DF  HEATING AND COOLING {3}
61  DF  .~ Heating and cooling of the same material {4}
62.~.~ Refrigerating system conversion

DEFINITION

Classification: 165/62

(under subclass 61) Apparatus wherein a refrigeration producing system has means to change the same to a heating system.