Granted Patent
Utility
US 6,121,756 · App. 09/426,347
Charger
Inventors:
Robert W. Johnson, Steven R. Widener, Joseph C. Paulakonis, Jeff Gucyski
Patented Case
View Patent ↗
Granted: Sep 19, 2000
Filed: Oct 25, 1999
Inventors
Robert W. Johnson
Steven R. Widener
Joseph C. Paulakonis
Jeff Gucyski
Assignee (at issue)
Powerware Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.