Granted Patent
Utility
US 5,434,877 · App. 08/187,438
Synchronized etalon filters
Inventor:
Yun Chur Chung
Patented Case
View Patent ↗
Granted: Jul 18, 1995
Filed: Jan 27, 1994
Inventor
Yun Chur Chung
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.