Granted Patent
Utility
US 6,816,521 · App. 10/431,880
Photonic device with monitor
Inventors:
Erik Zetterlund, Christer Olof Eriksson, John Krister Frode
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: May 8, 2003
Inventors
Erik Zetterlund
Christer Olof Eriksson
John Krister Frode
Assignee (at issue)
ZARLINK SEMICONDUCTOR AB
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.