Patents by Inventor April D. Hall

April D. Hall 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).

  • Pipe hold down device
    Patent number: D655794
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: March 13, 2012
    Assignee: E49 Enterprises, LLC
    Inventors: Mathew W. Hall, April D. Hall