Patents by Inventor Liu Defu

Liu Defu 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).

  • POLE SUPPORT FOR AN UPRIGHT POLE
    Publication number: 20080224016
    Abstract: A pole support for an upright pole, preferably for use with an upright pole of a sunshade, umbrella or other similar product, that comprises a pole base, a pole holder connected to said pole base for the upright pole, and a weight, wherein the weight is configured to act upon the pole base to stabilize the pole base, and wherein the weight is configured to be detached from the pole base.
    Type: Application
    Filed: March 12, 2008
    Publication date: September 18, 2008
    Inventors: Liu Defu, Liu Kai