Granted Patent
Utility
US 4,748,341 · App. 07/029,575
Uninterruptible power supply
Inventor:
Suresh C. Gupta
Patented Case
View Patent ↗
Granted: May 31, 1988
Filed: Mar 24, 1987
Inventor
Suresh C. Gupta
Assignee (at issue)
RTE Deltec 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.