Granted Patent
Utility
US 5,283,845 · App. 07/915,249
Multi-port tunable fiber-optic filter
Inventor:
Joseph Ip
Patented Case
View Patent ↗
Granted: Feb 1, 1994
Filed: Jul 20, 1992
Inventor
Joseph Ip
Assignee (at issue)
JDS Fitel 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.