Patents by Inventor Nelson A. Gragnami

Nelson A. Gragnami 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).

  • Railway tie plate and a method of making a railway tie plate
    Patent number: RE32894
    Abstract: A railway tie plate has at least one rib to locate a railway rail and two arches under which parts of rail clips can be driven parallel to the rib. It can be made by deformation of a conventional tie plate designed for use with fastening devices for holding the rail on to the tie plate other than rail clips which are driven parallel to the rail.
    Type: Grant
    Filed: November 6, 1980
    Date of Patent: March 28, 1989
    Assignee: Pandrol Limited
    Inventor: Nelson A. Gragnami