Granted Patent
Utility
US 5,815,490 · App. 08/559,884
SDH ring high order path management
Inventor:
Tsu-kai Lu
Patented Case
View Patent ↗
Granted: Sep 29, 1998
Filed: Nov 20, 1995
Inventor
Tsu-kai Lu
Assignee (at issue)
NEC Corporation Of America
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.