Patents by Inventor Nathan Howard Calvin

Nathan Howard Calvin 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).

  • Aircraft navigation light
    Patent number: D592780
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: May 19, 2009
    Inventors: Nathan Howard Calvin, Dean Andrew Wilkinson