US PATENT SUBCLASS 250 / 265
.~.~ Plural detectors


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}
265.~.~ Plural detectors {1}
266  DF  .~.~.~> With spacing or direction of detectors


DEFINITION

Classification: 250/265

(under subclass 256) Subject matter wherein the means to detect radiation emitted naturally or radiation modified or caused by material interacting with radiation includes plural radiation detectors and methods corresponding to the apparatus.

(1) Note. The detectors here may be electrical, nonelectrical, but a combination of a fluorescent screen and a responsive detector is considered but one detector.

SEE OR SEARCH THIS CLASS, SUBCLASS:

264, for well testing apparatus using plural radiation detectors wherein the novelty resides in the electrical circuitry between the detectors and a recorder or indicator.