US PATENT SUBCLASS 235 / 445
.~.~.~ Perforated record

Current as of: June, 1999
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235 /   HD   REGISTERS

435  DF  CODED RECORD SENSORS {9}
439  DF  .~ Particular sensor structure {8}
444  DF  .~.~ Electromechanical {2}
445.~.~.~ Perforated record {2}
446  DF  .~.~.~.~> Sensing element in continuous contact with record
447  DF  .~.~.~.~> Array

DEFINITION

Classification: 235/445

Perforated record:

(under subclass 444) Subject matter wherein the sensing element moves through or penetrates the record at points where perforations exist.