Granted Patent
Utility
US 4,866,763 · App. 07/232,966
Interexchange carrier automatic route selection system
Inventors:
Bret A. Cooper, William H. Havanas, Thomas R. Lanning, Mark A. Martinka
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Aug 17, 1988
Inventors
Bret A. Cooper
William H. Havanas
Thomas R. Lanning
Mark A. Martinka
Assignee (at issue)
American Telephone and Telegraph Company, AT&T Bell Laboratories
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.