Granted Patent
Utility
US 4,916,590 · App. 07/376,119
Series resonant magnetic amplifier power supply
Inventor:
Alan W. Petersen
Patented Case
View Patent ↗
Granted: Apr 10, 1990
Filed: Jul 6, 1989
Inventor
Alan W. Petersen
Assignee (at issue)
Spectra-Physics, 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.