Granted Patent
Utility
US 6,127,816 · App. 09/368,401
Multiple frequency switching power supply and methods to operate a switching power supply
Inventor:
B. Mark Hirst
Patented Case
View Patent ↗
Granted: Oct 3, 2000
Filed: Aug 4, 1999
Inventor
B. Mark Hirst
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.