Patents by Inventor Charles P. Buffin

Charles P. Buffin 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).

  • Sheet metal punching and cutting tool
    Patent number: 4813134
    Abstract: A compact, easy-to-use sheet metal tool which is capable of receiving hammer blows and having a cutting element capable of penetrating the sheet metal to create a slot and to cut an extended slot in the sheet, the tool is further provided with a flat guide portion to facilitate proper orientation of the tool and to guide the tool along the surface of the sheet.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: March 21, 1989
    Inventor: Charles P. Buffin