Granted Patent
Utility
US 5,005,936 · App. 07/527,228
Long range bidirectional optical fiber communication link
Inventor:
Hui-Pin Hsu
Patented Case
View Patent ↗
Granted: Apr 9, 1991
Filed: May 22, 1990
Inventor
Hui-Pin Hsu
Assignee (at issue)
Hughes Aircraft Company
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.