Granted Patent
Utility
US 5,216,683 · App. 07/792,039
DC-to-DC converter using SCRS with natural commutation
Inventor:
Joel Donahue
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: Nov 13, 1991
Inventor
Joel Donahue
Assignee (at issue)
Coherent, 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.