Granted Patent
Utility
US 6,737,838 · App. 10/056,469
DC/DC up/down converter
Inventors:
Ferdinand Jacob Sluijs, Cornelis M. Hart
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Jan 17, 2002
Inventors
Ferdinand Jacob Sluijs
Cornelis M. Hart
Assignee (at issue)
KONINKLIJKE PHILIPS ELECTRONICS NV
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.