Patents by Inventor William H. Blythe

William H. Blythe 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).

  • Tamper-deterrent device
    Patent number: 5054056
    Abstract: The present invention is directed toward deterring modification of a telephone unit by drilling by inserting a drill guard in the drilling path or axis such that the drill guard defines a surface portion in the drill path or axis at a deflection angle sufficient to prevent drilling due to deflection of the drill.
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: October 1, 1991
    Assignee: Bell South Corporation
    Inventor: William H. Blythe