Patents by Inventor George S. Jefferies

George S. Jefferies 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).

  • Snowplowable road marker apparatus
    Patent number: 4577992
    Abstract: The present invention is a reflective snowplowable road marker (1) of unitary construction for disposition in a road surface without adhesive having an outwardly dished top section (4) with a relieved channel (8) extending across the top surface (5) of the top section (4) with the channel (8) being adapted to receive therein a reflector (6), and a bottom section (10) disposed from the bottom surface (22) of the top section (4) which has a cylindrical shape and a plurality of spaced apart gripping means (14) disposed on the outside surface of the bottom section (10).
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: March 25, 1986
    Inventor: George S. Jefferies
  • Snowplowable road marker
    Patent number: D288792
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: March 17, 1987
    Inventor: George S. Jefferies