Patents by Inventor Trevor Sheldon

Trevor Sheldon 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).

  • Three prong plug with ground safety cutout
    Patent number: 7513782
    Abstract: A three-prong electrical plug includes a replaceable ground prong and circuitry inside the plug to preclude its functioning without the ground prong.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: April 7, 2009
    Assignee: Sure Ground L.L.C.
    Inventors: Bradley Sheldon, Walter M. Sheldon, Brad Davis, Trevor Sheldon