US PATENT SUBCLASS 138 / 38
.~ Heat transfer


Current as of: June, 1999
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138 /   HD   PIPES AND TUBULAR CONDUITS

37  DF  WITH FLOW REGULATORS AND/OR BAFFLES {3}
38.~ Heat transfer


DEFINITION

Classification: 138/38

(under subclass 37) Pipes in which the baffle or other means is designed to facilitate a transfer of heat between fluids inside and outside of the pipe.

SEE OR SEARCH CLASS

165, Heat Exchange,

177+, for a pipe or tubular conduit limited by structure on its exterior for use as a heat exchanger; particularly subclass 181+ for such an element with exterior fins.