Granted Patent
Utility
US 4,761,781 · App. 06/893,075
Adaptative packet/circuit switched transportation method and system
Inventors:
Jean Calvignac, Pierre Secondo
Patented Case
View Patent ↗
Granted: Aug 2, 1988
Filed: Aug 4, 1986
Inventors
Jean Calvignac
Pierre Secondo
Assignee (at issue)
International Business Machines Corporation
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.