US PATENT SUBCLASS 166 / 250.16
.~.~ Prospecting

Current as of: June, 1999
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166 /   HD   WELLS

244.1  DF  PROCESSES {39}
250.01  DF  .~ With indicating, testing, measuring or locating {21}
250.16.~.~ Prospecting

DEFINITION

Classification: 166/250.16

Prospecting:

(under subclass 250.01) Locating including the step(s) of finding the presence of hydrocarbons from water or earth samples.