US PATENT SUBCLASS 261 / 101
.~.~ Surface contact

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

75  DF  CONTACT DEVICES {11}
100  DF  .~ Porous sheet {4}
101.~.~ Surface contact {3}
102  DF  .~.~.~> Gas-flow control
103  DF  .~.~.~> Liquid downflow
104  DF  .~.~.~> Capillary feed

DEFINITION

Classification: 261/101

The gas coming only in contact with the sheet surface--i.e., does not necessarily pass through the same.