US PATENT SUBCLASS 60 / 641.4
.~.~ With deep well turbopump

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

641.1  DF  UTILIZING NATURAL HEAT {3}
641.2  DF  .~ Geothermal {3}
641.4.~.~ With deep well turbopump

DEFINITION

Classification: 60/641.4

With deep well turbopump:

(under subclass 641.2) Apparatus wherein the heat is delivered to the earth's surface by a subsurface turbine-driven pumping unit.