Granted Patent
Utility
US 4,961,801 · App. 06/608,610
Method of making a bidirectional coupler for communication over single fiber
Inventor:
George A. Gasparian
Patented Case
View Patent ↗
Granted: Oct 9, 1990
Filed: May 9, 1984
Inventor
George A. Gasparian
Assignee (at issue)
Alcatel USA
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.