Granted Patent
Utility
US 4,932,736 · App. 07/414,984
High-extinction 1.times.2 integrated optical switch
Inventor:
Shing-Fong Su
Patented Case
View Patent ↗
Granted: Jun 12, 1990
Filed: Sep 29, 1989
Inventor
Shing-Fong Su
Assignee (at issue)
GTE Laboratories Incorporated
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.