US PATENT SUBCLASS 165 / FOR 122
.~.~ Pressure response or control (165/31)


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

FOR 104  DF  AUTOMATIC CONTROL (165/13) {2}
FOR 105  DF  .~ Heating and cooling (165/14) {14}
FOR 122.~.~ Pressure response or control (165/31)


DEFINITION

Classification: 165/FOR.122

Foreign art collections where the control is of or by pressure.