US PATENT SUBCLASS 235 / 382.5
.~.~.~ Changeable authorization

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


235 /   HD   REGISTERS

375  DF  SYSTEMS CONTROLLED BY DATA BEARING RECORDS {8}
380  DF  .~ Credit or identification card systems {2}
382  DF  .~.~ Permitting access {1}
382.5.~.~.~ Changeable authorization

DEFINITION

Classification: 235/382.5

Changeable authorization:

(under subclass 382) Subject matter having an arrangement for modifying the data required to permit access.

(1) Note. Included herein are card key devices which change the card key which unlocks a door.