Granted Patent
Utility
US 5,043,980 · App. 07/432,921
Switching cell for packet switching network
Inventors:
Chester M. Day, Jr., James N. Giacopelli
Patented Case
View Patent ↗
Granted: Aug 27, 1991
Filed: Nov 7, 1989
Inventors
Chester M. Day, Jr.
James N. Giacopelli
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.