US PATENT SUBCLASS 250 / 473.1
.~ Methods
Current as of:
June, 1999
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250 /
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RADIANT ENERGY
472.1
DF
INVISIBLE RADIATION RESPONSIVE NONELECTRIC SIGNALLING
{4}
473.1
.~ Methods
DEFINITION
Classification: 250/473.1
Methods:
(under subclass 472.1) Subject matter which includes processes for producing a nonelectric signal in response to invisible radiation.