Granted Patent
Utility
US 5,870,294 · App. 08/939,103
Soft switched PWM AC to DC converter with gate array logic control
Inventor:
Jean-Marc Cyr
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Sep 26, 1997
Inventor
Jean-Marc Cyr
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.