Granted Patent
Utility
US 5,406,469 · App. 08/269,962
Electronic switching power supply
Inventor:
Gerhard Schwarz
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Jun 30, 1994
Inventor
Gerhard Schwarz
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.