Granted Patent
Utility
US 5,073,849 · App. 07/423,720
Resonant DC to DC converter switching at zero current
Inventor:
George Q. Morris
Patented Case
View Patent ↗
Granted: Dec 17, 1991
Filed: Oct 18, 1989
Inventor
George Q. Morris
Assignee (at issue)
Power-One, 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.