Granted Patent
Utility
US 5,647,039 · App. 08/572,588
Optical switching system and devices using a long period grating
Inventors:
Justin Boyd Judkins, Andrew John Stentz, Ashish Madhukar Vengsarkar
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Dec 14, 1995
Inventors
Justin Boyd Judkins
Andrew John Stentz
Ashish Madhukar Vengsarkar
Assignee (at issue)
LUCENT TECHNOLOGIES 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.