Granted Patent
Utility
US 4,656,627 · App. 06/674,049
Multiphase packet switching system
Inventors:
Lloyd A. Hasley, Jaan Raamot
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Nov 21, 1984
Inventors
Lloyd A. Hasley
Jaan Raamot
Assignees (at issue)
AT&T CORP.
AT&T Information Systems 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.