Patents Assigned to Lords III Research & Development Co.
  • Patent number: 4106590
    Abstract: A combined hand truck and ladder having a frame with a pair of elongated side rails and longitudinally spaced interconnecting cross braces. An upper back frame member is pivotally connected at one end to the upper end of the frame and is pivotally movable from locked positions parallel to the frame to an extended 90.degree. angle positions. The pivotally connected end is spaced a short distance from the end of the frame so that when the frame is inverted, an angled support provides a freely supported ladder. The frame member also has lower wheels and an extended support foot to be used in the hand truck mode.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: August 15, 1978
    Assignee: Lords III Research & Development Co.
    Inventor: Phil Keith Tarran
  • Patent number: D249031
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: August 22, 1978
    Assignee: Lords III Research & Development Co.
    Inventor: Phil K. Tarran
  • Patent number: D249032
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: August 22, 1978
    Assignee: Lords III Research & Development Co.
    Inventor: Phil K. Tarran