Granted Patent
Utility
US 5,157,652 · App. 07/557,680
Measurement of characteristics of broadcast optical networks
Inventor:
Stuart Douglas Walker
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: Jul 24, 1990
Inventor
Stuart Douglas Walker
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.