US PATENT SUBCLASS 165 / DIG 49
.~.~ Or for heating

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

DIG 44  DD  HAVING FLEXIBLE HEAT EXCHANGE SURFACE CONFORMING TO A SOLID STRUCTURE (E.G., APPLICATOR, ETC.) {3}
DIG 47  DD  .~ For cooling {2}
DIG 49.~.~ Or for heating {1}
DIG 50  DD  .~.~.~> Including a pump or valve