Patents by Inventor David E. Coburn

David E. Coburn 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).

  • Patent number: 4643271
    Abstract: A sound barrier for use along vehicle pathways including a gabion, the gabion comprising a wire cage filled with sound absorbing material and ballast material; gabions in the potential path of vehicles leaving the pathway have resilient filler material for cushioning the impact of vehicles striking the gabion.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: February 17, 1987
    Assignee: Thomas J. Kelley
    Inventor: David E. Coburn