Patents by Inventor Dennis L. Ervin

Dennis L. Ervin 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: D271758
    Type: Grant
    Filed: August 17, 1981
    Date of Patent: December 13, 1983
    Inventor: Dennis L. Ervin