US PATENT SUBCLASS 250 / 397
.~ With detector

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

396 R  DF  WITH CHARGED PARTICLE BEAM DEFLECTION OR FOCUSSING {3}
397.~ With detector

DEFINITION

Classification: 250/397

(under subclass 396) Subject matter having means responsive to invisible radiation to signal the presence or intensity of such radiation.

(1) Note. The incident radiation may be the beam itself or some other radiation.