US PATENT SUBCLASS 250 / 341.7
.~.~.~.~ With multiple sources

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}
340  DF  .~.~ Methods {2}
341.1  DF  .~.~.~ With irradiation or heating of object or material {7}
341.7.~.~.~.~ With multiple sources

DEFINITION

Classification: 250/341.7

With multiple sources:

(under subclass 341.1) Subject matter wherein the material or object is irradiated with infrared radiation from two or more distinct sources.