Patents Assigned to Melfred Inc.
  • Track ladder
    Patent number: 6230841
    Abstract: A track ladder that includes a ladder frame, plurality of steps secured to the ladder frame and a carriage assembly secured to the ladder frame. The ladder frame rides on an upper track and a lower track and adapted to move in a horizontal direction and pivot about a vertical axis.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: May 15, 2001
    Assignee: Melfred Inc.
    Inventor: Nicholas J. Valore