Granted Patent
Utility
US 5,539,574 · App. 08/361,258
Optical isolator with fabry-perot ripple reduction
Inventor:
Kevin Cyrus Robinson
Patented Case
View Patent ↗
Granted: Jul 23, 1996
Filed: Dec 21, 1994
Inventor
Kevin Cyrus Robinson
Assignee (at issue)
AT&T CORP.
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.