Granted Patent
Utility
US 5,457,621 · App. 08/384,398
Switching power supply having voltage blocking clamp
Inventors:
Mark L. Munday, Rodney C. Hemminger, Fred Schleifer
Patented Case
View Patent ↗
Granted: Oct 10, 1995
Filed: Feb 3, 1995
Inventors
Mark L. Munday
Rodney C. Hemminger
Fred Schleifer
Assignee (at issue)
ABB Power T&D Company Inc.
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.