US PATENT SUBCLASS 299 / 6
.~ Melted material recovered

Current as of: June, 1999
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299 /   HD   MINING OR IN SITU DISINTEGRATION OF HARD MATERIAL

3  DF  IN SITU CONVERSION OF SOLID TO FLUID {3}
6.~ Melted material recovered

DEFINITION

Classification: 299/6

(under subclass 3) Subject matter in which the material that is commercially desirable is converted to a fluid for recovery.

SEE OR SEARCH CLASS

166, Wells,

302+, for a well process involving heating and subclasses 57+ for well apparatus including heating means.