Patents Assigned to Red Tower, Inc.
  • Electronic musical keyboard operated by foot for amusement and exercise
    Patent number: 6743971
    Abstract: An electronic amusement-exercise device includes a keyboard, an electronic circuit board disposed in the keyboard, and a plurality of keys mounted on the keyboard. As the keys are treaded on by the feet of a person, musical tones are reproduced through a loud speaker which is fastened to the keyboard.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: June 1, 2004
    Assignee: Red Tower, Inc.
    Inventor: Chan-Chuan Chen