Granted Patent
Utility
US 6,783,284 · App. 10/253,220
Optical module for wavelength reference measurement in WDM systems
Inventors:
Hans-Ludwig Althaus, Joachim Reill, Karl-Heinz Schlereth
Patented Case
View Patent ↗
Granted: Aug 31, 2004
Filed: Sep 24, 2002
Inventors
Hans-Ludwig Althaus
Joachim Reill
Karl-Heinz Schlereth
Assignee (at issue)
Infineon Technologies AG
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.