US PATENT SUBCLASS 324 / 349
.~.~.~ Of the telluric type

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}
348  DF  .~.~ For detecting naturally occurring fields, currents, or potentials {2}
349.~.~.~ Of the telluric type {1}
350  DF  .~.~.~.~> Including magneto-telluric type

DEFINITION

Classification: 324/349

Of the telluric type:

(under subclass 348) Subject matter wherein the potentials or fields are associated with naturally occurring variable current which permanently circulate in vast sheets within the outermost layer of the earth's crust.