US PATENT SUBCLASS 250 / 392
.~.~ With indicating or recording means

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

336.1  DF  INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING {16}
390.01  DF  .~ Neutron responsive means {10}
392.~.~ With indicating or recording means

DEFINITION

Classification: 250/392

(under subclass 390.01) Subject matter with means for indicating or recording the signal generated by the neutron responsive means.