Granted Patent
Utility
US 5,969,512 · App. 08/979,147
Output voltage variable power circuit
Inventor:
Hirotsugu Matsuyama
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Nov 26, 1997
Inventor
Hirotsugu Matsuyama
Assignee (at issue)
NEC 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.