US PATENT SUBCLASS 235 / 442
.~.~.~ Perforated

Current as of: June, 1999
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235 /   HD   REGISTERS

435  DF  CODED RECORD SENSORS {9}
439  DF  .~ Particular sensor structure {8}
441  DF  .~.~ Electrical contact {1}
442.~.~.~ Perforated {1}
443  DF  .~.~.~.~> Static sensed

DEFINITION

Classification: 235/442

Perforated:

(under subclass 441) Subject matter wherein the electrical circuit is completed through perforations in the record.