Patents by Inventor Wilbert B. Johnson

Wilbert B. Johnson 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).

  • Publication number: 20110101780
    Abstract: The present invention provides a portable rechargeable battery powered backup system for electrical devices, comprising a portable, multi-outlet power source designed to provide electrical current further comprising a four-wheeled pushcart having two shelves or compartments for supporting two rechargeable Lithium-Ion batteries
    Type: Application
    Filed: October 26, 2010
    Publication date: May 5, 2011
    Inventor: Wilbert B. Johnson