Patents Assigned to Young S. Chung
  • Changeable signboard
    Patent number: 5528258
    Abstract: A changeable signboard, in which each turning pole is operated by a stepping motor, has three advertisement faces and turns clockwise and counterclockwise at a predetermined degree, thus displaying a certain pattern according to the electronic circuit. As many turning poles as needed can be arranged and one can show linear or curved images and diversify the patterns of advertisements.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: June 18, 1996
    Assignee: Young S. Chung
    Inventor: Shin K. Moon