Patents by Inventor Bob Scheef Christian

Bob Scheef Christian 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).

  • Robotic sign waver
    Publication number: 20080078110
    Abstract: The robotic sign waver is unique in the use of common technologies used in an uncommon way. The industrial electric motor driving an eccentric cam that moves a bar has been used in various applications over the years. My patent request is the application of this technology to serve new and necessary purposes.
    Type: Application
    Filed: October 2, 2006
    Publication date: April 3, 2008
    Inventor: Bob Scheef Christian