Granted Patent
Utility
US 4,852,157 · App. 07/163,765
Multi-task state machine signalling translator
Inventor:
Raymond E. Tyrrell
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Mar 3, 1988
Inventor
Raymond E. Tyrrell
Assignee (at issue)
Alcatel NA, 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.