Patents by Inventor John H. Shennan

John H. Shennan 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).

  • Building panel
    Patent number: 4137684
    Abstract: A building element comprises a rectangular panel having four flanges projecting from one face thereof adjacent to the edges of the panel, wherein the bottom and side edges of the panel each have at least one groove running the length thereof and wherein the flanges are provided with means suitable for, or suitable for use in, the fixing of the building element to another similar or different building element.
    Type: Grant
    Filed: February 4, 1977
    Date of Patent: February 6, 1979
    Assignee: Selleck Nicholls Williams (E.C.C.) Limited
    Inventor: John H. Shennan