Granted Patent
Utility
US 5,117,324 · App. 07/434,279
UPS-computer system and method for initiating computer shutdown based on remaining battery time as determined from sensed battery voltage and discharge curves
Inventor:
Robert W. Johnson
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: Nov 13, 1989
Inventor
Robert W. Johnson
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.