Patents by Inventor Carl Nachtigall

Carl Nachtigall 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).

  • Ground fault electrical panel
    Patent number: 5142646
    Abstract: A circuit breaker panel system supplies power to plural circuits that are ground fault protected and plural circuits that are not ground fault protected. The panel system has two sections. One section, which is not ground fault protected, contains a ground fault circuit breaker that supplies power to the second section, so that the entire second section is ground fault protected.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: August 25, 1992
    Inventor: Carl Nachtigall