Granted Patent
Utility
US 5,185,536 · App. 07/766,762
Uninterruptible power supply having improved battery charger
Inventors:
Robert W. Johnson, Joseph C. Paulakonis
Patented Case
View Patent ↗
Granted: Feb 9, 1993
Filed: Sep 27, 1991
Inventors
Robert W. Johnson
Joseph C. Paulakonis
Assignee (at issue)
Exide Electronics 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.