US PATENT SUBCLASS 261 / 147
.~.~ Serially arranged in flow path

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}
146  DF  .~ Plural distinct contact zones {1}
147.~.~ Serially arranged in flow path {2}
148  DF  .~.~.~> Counter flowing gas and liquid (e.g., absorption or rectification column)
149  DF  .~.~.~> Heat exchanger in flow path spaced from contact zones

DEFINITION

Classification: 261/147

(under subclass 146) Apparatus in which one of the distinct contact zones is downstream of another.