Granted Patent
Utility
US 6,348,782 · App. 09/165,859
Uninterruptible power supply systems, voltage regulators and operating methods employing controlled ferroresonant transformer circuits
Inventors:
George W. Oughton, Jr., John Earle
Patented Case
View Patent ↗
Granted: Feb 19, 2002
Filed: Oct 2, 1998
Inventors
George W. Oughton, Jr.
John Earle
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.