Granted Patent
Utility
US 6,344,922 · App. 09/253,819
Optical signal varying devices
Inventors:
Stephen G. Grubb, Raymond Zanoni, Thomas D. Stephens, Deepak Boggavarapu, Ruxiang Jin
Patented Case
View Patent ↗
Granted: Feb 5, 2002
Filed: Feb 19, 1999
Inventors
Stephen G. Grubb
Raymond Zanoni
Thomas D. Stephens
Deepak Boggavarapu
Ruxiang Jin
Assignee (at issue)
Corvis Corporation
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.