Patents Assigned to The Megaprint Group Ltd.
  • Information-encrypting device and method
    Patent number: 5321755
    Abstract: A method of encrypting a sequence of characters such as a code number on an information slide or disc is provided. The method allows the encryption of a plurality of sequences on a single user-markable disc or slide which may be deciphered by a reference to a single code word.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: June 14, 1994
    Assignee: The Megaprint Group Ltd.
    Inventor: Pieter A. Vlaar