Granted Patent
Utility
US 4,878,722 · App. 07/211,437
Wavelength encoded optical switches
Inventors:
Leonard Y. Nelson, John R. Green, Carol Wong
Patented Case
View Patent ↗
Granted: Nov 7, 1989
Filed: Jun 24, 1988
Inventors
Leonard Y. Nelson
John R. Green
Carol Wong
Assignee (at issue)
Korry Electronics Co.
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.