US PATENT SUBCLASS 324 / 327
.~.~ Using oscillator coupled search head

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}
326  DF  .~ For small object detection or location {2}
327.~.~ Using oscillator coupled search head {1}
328  DF  .~.~.~> Of the beat frequency type

DEFINITION

Classification: 324/327

Using oscillator coupled search head:

(under subclass 326) Subject matter wherein one or more parameters of an oscillator, coupled to or formed in conjunction with a coil or antenna moved over the region of exploration, are monitored.

SEE OR SEARCH THIS CLASS, SUBCLASS:

332, for subject matter under subclass 323 using a radiant energy transmitter.

SEE OR SEARCH CLASS

331, Oscillators, for a particular type of oscillator circuitry.