Granted Patent
Utility
US 5,202,618 · App. 07/825,998
Power supply system for electric circuits different in operating voltage
Inventor:
Kouichi Nishimura
Patented Case
View Patent ↗
Granted: Apr 13, 1993
Filed: Jan 27, 1992
Inventor
Kouichi Nishimura
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.