US PATENT SUBCLASS 250 / 269.1
.~.~ With source and detector

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}
269.1.~.~ With source and detector {4}
269.2  DF  .~.~.~> With plural types of detectors
269.3  DF  .~.~.~> Having gamma source and gamma detector
269.4  DF  .~.~.~> Having neutron source and neutron detector {1}
269.6  DF  .~.~.~> Having neutron source and gamma detector {2}

DEFINITION

Classification: 250/269.1

With source and detector:

(under subclass 256) Subject matter in which means to expose the material to radiation in or about the well is also supported by the means to support for movement the means to detect radiation, and includes methods corresponding to the apparatus.