Patents by Inventor William D. Griffiths

William D. Griffiths 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).

  • Carrying case having detachable step stool
    Patent number: 5486043
    Abstract: A carrying case assembly includes a carrying case portion provided with a first interior cavity and a first top opening and a step stool portion provided with a second interior space and a bottom opening. The bottom of the step stool portion is attached to the top of the carrying case portion such that the first and the second interior space, together, form a third interior space. The step stool portion is removable from the carrying case portion and is adapted to support a person thereon.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: January 23, 1996
    Assignee: Nomadic Structures, Inc.
    Inventors: Arthur G. Carr, Christopher A. Durgin, William D. Griffiths, J. Alexander Hill
  • Collapsible podium
    Patent number: 5044595
    Abstract: A kit for constructing a collapsible podium which includes a laterally pliable yet longitudinally rigid panel such as tambour and a top plate with a circumferential channel into which one of the conformable edges of the panel is operably receivable by using a sloped guiding wall on the plate. The kit may also include a bottom plate with a circumferential channel into which the other conformable edge of the panel is operably receivable by using a sloped guiding wall.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: September 3, 1991
    Assignee: Nomadic Structures, Inc.
    Inventors: Arthur G. Carr, William D. Griffiths