Patents Assigned to Action Drive-Thru Inc.
  • Concealed magnetic indicia
    Patent number: 4925215
    Abstract: A paper token upon which there is printed an indicia in a first ink which contains iron oxide particles and which indicia is overprinted with a second ink not containing magnetic particles. The first and second inks are dissolvable by the same solvent and the two inks are physically bonded together.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: May 15, 1990
    Assignee: Action Drive-Thru Inc.
    Inventor: Martin S. Klaiber