Granted Patent
Utility
US 6,717,827 · App. 10/319,681
Switching power supply
Inventor:
Hiroyuki Ota
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: Dec 16, 2002
Inventor
Hiroyuki Ota
Assignee (at issue)
FUJI ELECTRIC CO., LTD.
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.