Granted Patent
Utility
US 4,885,780 · App. 07/219,139
Method for call routing in a network
Inventors:
Gita Gopal, Abel Weinrib
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Jul 15, 1988
Inventors
Gita Gopal
Abel Weinrib
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.