US PATENT SUBCLASS 250 / 263
.~.~.~ With detector signal modulation or carrier wave

Current as of: June, 1999
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250 /   HD   RADIANT ENERGY

253  DF  GEOLOGICAL TESTING OR IRRADIATION {3}
256  DF  .~ Well testing apparatus and methods {9}
262  DF  .~.~ With particular detector signal circuit {2}
263.~.~.~ With detector signal modulation or carrier wave

DEFINITION

Classification: 250/263

(under subclass 262) Subject matter wherein the electrical circuit includes means to modulate an electrical wave with signals emitted by the detector upon detecting radiation and includes methods corresponding to the apparatus.