Patents by Inventor Malcolm Wallhead

Malcolm Wallhead 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).

  • Buildings for harsh environments
    Patent number: 4848046
    Abstract: A building for use in harsh environments where drift materials, such as snow, tend to collect against exterior walls. One or more exterior walls formed of wall panels extend upwardly from a base perimeter of the building, and provide a building exterior surface. The surface curves outwardly and upwardly adjacent the base perimeter so that the exterior walls have an undercut region adjacent that base perimeter. The building is portable, and can be dismantled when not being used.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: July 18, 1989
    Inventor: Malcolm Wallhead
  • Sledge canopy
    Patent number: D328727
    Type: Grant
    Filed: February 21, 1990
    Date of Patent: August 18, 1992
    Inventor: Malcolm Wallhead