US PATENT SUBCLASS 250 / 340
.~.~ Methods

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.~.~ Methods {2}
341.1  DF  .~.~.~> With irradiation or heating of object or material {7}
342  DF  .~.~.~> Locating infrared emissive objects

DEFINITION

Classification: 250/340

(under subclass 338.1) Subject matter which includes methods of detecting infrared radiation where not elsewhere provided.

SEE OR SEARCH THIS CLASS, SUBCLASS:

341.1+, for methods involving electric signalling where the detected radiation is first modified by material or an object before detection.

342, for methods involving the locating of objects.