Patents by Inventor Francis Xavier Graney

Francis Xavier Graney 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).

  • Power sifter
    Patent number: 6315129
    Abstract: Method and apparatus of continuously sifting pre-tilled topsoil to a controlled depth in place to remove stone, weed, grass and other materials and separate the stone and heavy materials from vegetation which is compressed into bundles.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: November 13, 2001
    Inventor: Francis Xavier Graney