Patents by Inventor Greogory D. Newman

Greogory D. Newman 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 signalling system
    Patent number: 5437422
    Abstract: A railway signalling system comprising a control device for controlling the movements of railway vehicles on a railway track.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: August 1, 1995
    Assignee: Westinghouse Brake and Signal Holdings Limited
    Inventor: Greogory D. Newman