Patents by Inventor Woodward Johnson

Woodward 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).

  • Portable power supply
    Patent number: 5111127
    Abstract: A portable power supply having a rechargeable battery in a housing mounted on a portable frame. An inverter/converter unit, attached to the frame, is hardwired to the battery for conversion of DC power to AC power and for recharging the battery from an external AC source. Power distribution means are provided for distributing DC and AC Power. Photovoltaic panels are mounted to the frame for recharging the battery.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: May 5, 1992
    Inventor: Woodward Johnson