Granted Patent
Utility
US 6,738,536 · App. 10/022,360
Wavelength tunable filter device for fiber optic systems
Inventors:
Evelyn Boettcher, Sandeep T. Vohra, Paul Matthews, Paul D. Biernacki
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Dec 20, 2001
Inventors
Evelyn Boettcher
Sandeep T. Vohra
Paul Matthews
Paul D. Biernacki
Assignee (at issue)
Optinel Systems, 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.