Granted Patent
Utility
US 4,648,020 · App. 06/705,546
Power booster switching at zero current
Inventor:
Patrizio Vinciarelli
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Feb 26, 1985
Inventor
Patrizio Vinciarelli
Assignee (at issue)
Vicor 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.