Granted Patent
Utility
US 5,953,140 · App. 08/940,876
Electrical domain improvement of optically filtered signals
Inventor:
Frank A. McKiel, Jr.
Patented Case
View Patent ↗
Granted: Sep 14, 1999
Filed: Sep 30, 1997
Inventor
Frank A. McKiel, Jr.
Assignee (at issue)
MCI Communications Corporation
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.