US PATENT SUBCLASS 250 / 269.3
.~.~.~ Having gamma source and gamma 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  DF  .~.~ With source and detector {4}
269.3.~.~.~ Having gamma source and gamma detector

DEFINITION

Classification: 250/269.3

Having gamma source and gamma detector:

(under subclass 269.1) Subject matter wherein the means to expose the material to radiation includes a gamma ray source and the means to detect radiation modified or caused by the material includes a gamma ray detector and includes methods corresponding to the apparatus.

SEE OR SEARCH CLASS

376, Induced Nuclear Reactions: Processes, Systems, and Elements,

157, for gamma ray activation analysis.

378, X-Ray or Gamma Ray Systems or Devices,

88, for gamma ray composition analysis.