US PATENT SUBCLASS 324 / 359
.~.~.~.~ With nonelectrode pickup means

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  DF  .~.~ Coupled to artificial current source {2}
357  DF  .~.~.~ Including separate pickup of generated fields or potentials {6}
359.~.~.~.~ With nonelectrode pickup means

DEFINITION

Classification: 324/359

With nonelectrode pickup means:

(under subclass 357) Subject matter having means for detecting radiant energy produced by the artificial current flow, including magnetic, electromagnetic, and electrostatic fields.

(1) Note. Subclass 345 takes precedence when detecting a magnetic field if the means for introducing the artificial current flow is not significant.