Patents by Inventor Frank Th. Gaertner

Frank Th. Gaertner 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).

  • Switching valve
    Patent number: D604807
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: November 24, 2009
    Assignee: Buerkert Werke GmbH & Co. KG
    Inventor: Frank Th. Gaertner
  • Switching valve
    Patent number: D606630
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: December 22, 2009
    Assignee: Buerkert Werke GmbH & Co. KG
    Inventor: Frank Th. Gaertner
  • Switching valve
    Patent number: D616529
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: May 25, 2010
    Assignee: Buerkert Werke GmbH & Co. KG
    Inventor: Frank Th. Gaertner
  • Switching valve
    Patent number: D616530
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: May 25, 2010
    Assignee: Buerkert Werke GmbH & Co., KG
    Inventor: Frank Th. Gaertner