Granted Patent
Utility
US 5,602,673 · App. 08/175,068
Optical isolator without polarization mode dispersion
Inventor:
Clarence B. Swan
Patented Case
View Patent ↗
Granted: Feb 11, 1997
Filed: Dec 29, 1993
Inventor
Clarence B. Swan
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.