US PATENT SUBCLASS 261 / 95
.~.~ Surface contact

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

75  DF  CONTACT DEVICES {11}
94  DF  .~ Porous mass {3}
95.~.~ Surface contact

DEFINITION

Classification: 261/95

The gases flowing only in contact with the surface of the mass.