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.