Granted Patent
Utility
US 4,763,350 · App. 06/744,343
Facility for detecting and converting dial information and control information for service features of a telephone switching system
Inventors:
Manfred Immendorfer, Dieter Kopp, Gebhard Thierer, Helmut Seichter
Patented Case
View Patent ↗
Granted: Aug 9, 1988
Filed: Jun 13, 1985
Inventors
Manfred Immendorfer
Dieter Kopp
Gebhard Thierer
Helmut Seichter
Assignee (at issue)
Alcatel N.V.
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.