Patents by Inventor Frank Ciavarella

Frank Ciavarella 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).

  • Adjustable carpenter square
    Patent number: 4562649
    Abstract: An adjustable carpenter square for use in determining the relative angles between two predetermined points defined by a pair of longitudinal extensions pivotally attached together at one end.
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: January 7, 1986
    Inventor: Frank Ciavarella