US PATENT SUBCLASS 261 / 134
.~.~ Pressure responsive supplementary gas supply means

Current as of: June, 1999
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261 /   HD   GAS AND LIQUID CONTACT APPARATUS

127  DF  WITH EXTERNAL SUPPLY OR REMOVAL OF HEAT {14}
133  DF  .~ With mixer for supplementary gas and gaseous contactor product {1}
134.~.~ Pressure responsive supplementary gas supply means

DEFINITION

Classification: 261/134

(under subclass 133) Apparatus in which the admittance of the

additional gas is controlled by pressure.