Patents Assigned to Donovan Associates Inc.
  • Tamper-proof ticket holder
    Patent number: 5328144
    Abstract: Tamper-proof ticket holder comprising two opposing fingers, both having the width of a ticket, the distance between the fingers being sufficient to allow depression of the fingers for insertion of the ticket; the fingers being sufficiently flexible to hold the ticket securely.
    Type: Grant
    Filed: January 25, 1993
    Date of Patent: July 12, 1994
    Assignee: Donovan Associates Inc.
    Inventor: Richard E. Donovan