US PATENT SUBCLASS 250 / 559.44
.~.~.~ Identifying marking, pattern, or indicia


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}
559.4  DF  .~.~ With indication of presence of material or feature {5}
559.44.~.~.~ Identifying marking, pattern, or indicia


DEFINITION

Classification: 250/559.44

Identifying marking, pattern, or indicia:

(under subclass 559.4) Subject matter wherein the circuit output indicates the presence or absence of a marking, pattern, or indicia on the surface of the material.

(1) Note. This subclass does not include subject matter which identifies or decodes markings, patterns, or indicia.