Patents by Inventor John P. Ferris

John P. Ferris 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).

  • Pavement marker
    Patent number: 4402628
    Abstract: A hardened steel pavement marker having a base with raised protective cross ribs and reflectors thereon, and a depending skirt for embedment in the pavement, the skirt being scalloped and having holes therein.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: September 6, 1983
    Assignee: General Industries, Inc.
    Inventors: Wilfred J. Grenier, Lee B. Zuckerman, John P. Ferris, Joseph DeFalco