Granted Patent
Utility
US 5,148,428 · App. 07/670,455
Modular architecture for very large packet switch
Inventor:
Tony Tung-Ying Lee
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Mar 11, 1991
Inventor
Tony Tung-Ying Lee
Assignee (at issue)
Bell Communications Research, Inc.
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.