Data Information Management Systems, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4731525 Modular microprocessor-based system for printing and reading school attendance recordkeeping codes on formsExpiredFeb 07, 86Mar 15, 88[G06K]
4578572 Modular microprocessor-based system for printing and reading a personal identifier code on a formExpiredJun 17, 83Mar 25, 86[G06K]

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