US PATENT SUBCLASS 250 / 559.47
.~.~.~.~ With counting means

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}
559.45  DF  .~.~.~ With defect discrimination circuitry {3}
559.47.~.~.~.~ With counting means

DEFINITION

Classification: 250/559.47

With counting means:

(under subclass 559.45) Subject matter having means to count the number of defects or numbers of types of defects which are detected over a period of time.

SEE OR SEARCH CLASS

377, Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,

53, for counter systems with photoelectric detectors.