US PATENT SUBCLASS 62 / 308
.~.~ Drop tube type

Current as of: June, 1999
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62 /   HD   REFRIGERATION

304  DF  MATERIAL COOLING MEANS INCLUDING GAS-LIQUID CONTACTOR {9}
307  DF  .~ Submerged gas inlet {1}
308.~.~ Drop tube type

DEFINITION

Classification: 62/308

(under subclass 307) Apparatus wherein the gas inlet is a pipe suspended through an open top of a receptacle containing the liquid.