Granted Patent
Utility
US 6,373,227 · App. 09/778,458
Charging and discharging control circuit and charging type power supply device
Inventor:
Takao Nakashimo
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Feb 7, 2001
Inventor
Takao Nakashimo
Assignee (at issue)
SEIKO INSTRUMENTS 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.