Granted Patent
Utility
US 5,777,841 · App. 08/813,263
Method of qualification testing of DC-DC converters
Inventors:
Kevin Stone, Ken David Ellacott
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Mar 7, 1997
Inventors
Kevin Stone
Ken David Ellacott
Assignee (at issue)
Nortel Networks Limited
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.