Granted Patent
Utility
US 5,625,540 · App. 08/307,816
Electronic switched-mode power supply
Inventor:
Gunther Bergk
Patented Case
View Patent ↗
Granted: Apr 29, 1997
Filed: Sep 27, 1994
Inventor
Gunther Bergk
Assignee (at issue)
The Braun 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.