Patents by Inventor David Christian Ellerman

David Christian Ellerman 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).

  • Float assembly light indicator for Christmas tree stand
    Patent number: 7471206
    Abstract: A float assembly light indicator for use in detecting water levels within a container, such as a Christmas tree stand, includes a float housing having multiple float switches therein and are operably connected to a remotely locatable water level light indicator.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: December 30, 2008
    Inventor: David Christian Ellerman