US PATENT SUBCLASS 324 / 354
.~.~ Coupled to artificial current source

Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

323  DF  OF GEOPHYSICAL SURFACE OR SUBSURFACE IN SITU {7}
347  DF  .~ Using electrode arrays, circuits, structure, or supports {2}
354.~.~ Coupled to artificial current source {2}
355  DF  .~.~.~> Within a borehole {1}
357  DF  .~.~.~> Including separate pickup of generated fields or potentials {6}

DEFINITION

Classification: 324/354

Coupled to artificial current source:

(under subclass 347) Subject matter in which a parameter of the current introduced into the subsurface is measured.