US PATENT SUBCLASS 250 / 262
.~.~ With particular detector signal circuit

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.~.~ With particular detector signal circuit {2}
263  DF  .~.~.~> With detector signal modulation or carrier wave
264  DF  .~.~.~> Having plural detectors

DEFINITION

Classification: 250/262

(under subclass 256) Subject matter wherein the means to detect radiation emitted naturally or radiation modified or caused by material interacting with radiation includes a radiation detector and a detailed electrical circuit connected between the detector and an indicator or recorder of the radiation sensed by the detector and includes methods corresponding to the apparatus.