Patents by Inventor Guy A. Campbell

Guy A. Campbell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ladder platform
    Patent number: 4618030
    Abstract: A platform for a ladder having rungs includes a frame and a step structure. The frame is arranged to detachably attach to at least one of the rungs of the ladder. The step structure is hingeably mounted to the frame for providing a footrest. The step structure is sized to swing upwardly and allow a foothold between the step structure and the frame. This foothold is supported by an intermediate one of the rungs.
    Type: Grant
    Filed: August 14, 1984
    Date of Patent: October 21, 1986
    Inventor: Guy A. Campbell