US PATENT SUBCLASS 235 / 462.22
.~.~.~.~ Extended reader working range (e.g., multiple focal planes)

Current as of: June, 1999
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235 /   HD   REGISTERS

435  DF  CODED RECORD SENSORS {9}
439  DF  .~ Particular sensor structure {8}
454  DF  .~.~ Optical {10}
462.01  DF  .~.~.~ Bar code {20}
462.22.~.~.~.~ Extended reader working range (e.g., multiple focal planes) {1}
462.23  DF  .~.~.~.~.~> Auto-focusing {1}

DEFINITION

Classification: 235/462.22

Extended reader working range (e.g., multiple focal planes):

(under subclass 462.01) Subject matter including means to read a bar code at a wide range of different distances from the reader.

(1) Note. The working range is the area around the focal plane that can yield a successful decoding. To be classified herein, the range must exceed the range of the standard reader.

SEE OR SEARCH CLASS

396, Photography,

121+, for a camera with plural focusing or range finding areas.