Patents by Inventor David Lee Still

David Lee Still 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: 9329295
    Abstract: A device for locating a ferromagnetic object has a non-magnetic housing with a front end, a rear end, and a perimeter wall defining a chamber within the housing. A ferromagnetic member is housed within the chamber in a substantially fixed position. A magnet element is housed within the chamber between the front end and the ferromagnetic member, wherein the magnet element is reversibly movable between a first position in which the magnet element is proximate the ferromagnetic member, and a second position in which the magnet element is proximate the front end.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: May 3, 2016
    Assignee: DIAMOND RESOURCE, LLC
    Inventors: John Blake, David Lee Still
  • Patent number: D636248
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: April 19, 2011
    Assignee: Diamond Resource, LLC
    Inventor: David Lee Still
  • Patent number: D649001
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: November 22, 2011
    Assignee: Diamond Resource, LLC
    Inventor: David Lee Still
  • Patent number: D660674
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: May 29, 2012
    Assignee: Diamond Resource, LLC
    Inventor: David Lee Still
  • Patent number: D664417
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: July 31, 2012
    Assignee: Diamond Resource, LLC
    Inventor: David Lee Still
  • Patent number: D925491
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: July 20, 2021
    Inventor: David Lee Still