Patents by Inventor William A. Spurr

William A. Spurr 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).

  • Precast railway crossing slab
    Patent number: 4911360
    Abstract: A modular railway crossing element is described having a slab member with a pair of open channels formed in its upper surface. The channels are substantially parallel and dimensioned to receive a pair of rails. Also described is a railway crossing utilizing the slab member and a method of forming a railway crossing.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: March 27, 1990
    Assignee: Urban Transportation Development Corporation Limited
    Inventor: William A. Spurr