US PATENT SUBCLASS 60 / 641.2
.~ Geothermal

Current as of: June, 1999
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60 /   HD   POWER PLANTS

641.1  DF  UTILIZING NATURAL HEAT {3}
641.2.~ Geothermal {3}
641.3  DF  .~.~> With direct fluid contact
641.4  DF  .~.~> With deep well turbopump
641.5  DF  .~.~> With fluid flashing

DEFINITION

Classification: 60/641.2

Geothermal:

(under subclass 641.1) Apparatus wherein the heat is evolved from the earth's interior.