Patents by Inventor John Helliwell

John Helliwell 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).

  • Golf Practice Assemblies and Methods
    Publication number: 20140038740
    Abstract: Modifiable platform assemblies are provided that can include at least two frame assemblies configured to reside one above the other and be rotatably connected in relation to one and the other along an axis extending substantially normal to an interface between the two assemblies. These platforms can be used to develop the golf swing. Accordingly, golf ball hitting practice methods are also provided.
    Type: Application
    Filed: March 15, 2013
    Publication date: February 6, 2014
    Inventors: David Wanner, John Helliwell