US PATENT SUBCLASS 324 / 337
.~.~.~ To detect return wave signals

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}
332  DF  .~ With radiant energy or nonconductive-type transmitter {2}
334  DF  .~.~ With separate pickup {4}
337.~.~.~ To detect return wave signals

DEFINITION

Classification: 324/337

To detect return wave signals:

(under subclass 334) Subject matter having the pickup means positioned at the same location as the transmitter for receiving reflections or reradiations of the transmitted signal.

SEE OR SEARCH CLASS

343, Communications: Radio Wave Antennas,

5+, for radar systems.