US PATENT SUBCLASS 261 / 139
.~.~ Electric heater

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}
138  DF  .~ Diverse heat supply or removal means {1}
139.~.~ Electric heater

DEFINITION

Classification: 261/139

(under subclass 138) Apparatus including an electric heating means.