Patents by Inventor David L. Heller

David L. Heller 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: D701692
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: April 1, 2014
    Inventor: David L. Heller