US PATENT SUBCLASS 250 / 348
.~.~.~ Controlled by signalling means

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

336.1  DF  INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING {16}
338.1  DF  .~ Infrared responsive {12}
347  DF  .~.~ With movable beam deflector or focussing means {1}
348.~.~.~ Controlled by signalling means

DEFINITION

Classification: 250/348

(under subclass 347) Subject matter having means responsive to the radiant energy responsive means to change or maintain constant the orientation of the deflector or focussing means.