US PATENT SUBCLASS 250 / 559.39
.~.~ With comparison to reference or standard

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

200  DF  PHOTOCELLS; CIRCUITS AND APPARATUS {11}
559.01  DF  .~ With circuit for evaluating a web, strand, strip, or sheet {13}
559.39.~.~ With comparison to reference or standard

DEFINITION

Classification: 250/559.39

With comparison to reference or standard:

(under subclass 559.01) Subject matter wherein evaluation of the material includes comparing the circuit output to a reference or stored value.