US PATENT SUBCLASS 250 / 373
.~.~ With means to transmission-test contained fluent material

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

336.1  DF  INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING {16}
372  DF  .~ Ultraviolet light responsive means {1}
373.~.~ With means to transmission-test contained fluent material

DEFINITION

Classification: 250/373

(under subclass 372) Subject matter having a source of ultraviolet radiation in addition to the signalling means and means to confine a gas, fluid or fluid-like material between

the source and the signalling means so that the signalling means responds to radiation from the source, that passes through the material.