Patents by Inventor Donald Crofford

Donald Crofford 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).

  • Temporary reusable sign apparatus
    Patent number: 8713829
    Abstract: A temporary reusable sign apparatus that includes a substantially flat sign board having one or more openings and front and rear sides, and a securing means for securing the substantially flat sign board to a supporting structure. The front side includes a dry-eraseable marker surface configured to receive one or more indicia. The securing means is configured to deflectably receive and thereby frictionaly engage a portion of the supporting structure.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: May 6, 2014
    Inventor: Donald Crofford