US PATENT SUBCLASS 165 / FOR 131
.~.~ Flow of heat exchanging material controlled by its own condition (165/40)

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

FOR 104  DF  AUTOMATIC CONTROL (165/13) {2}
FOR 123  DF  .~ Temperature or pressure (165/32) {4}
FOR 131.~.~ Flow of heat exchanging material controlled by its own condition (165/40)

DEFINITION

Classification: 165/FOR.131

Foreign art collections responsive to a flowing stream of heat exchanging fluid controlling the flow of the stream.