Granted Patent
Utility
US 5,680,301 · App. 07/939,441
Series/parallel resonant converter
Inventors:
George W. Oughton, Jr., Steven R. Widener
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Sep 2, 1992
Inventors
George W. Oughton, Jr.
Steven R. Widener
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.