Granted Patent
Utility
US 4,719,617 · App. 06/705,460
Full service voice/data system
Inventors:
John A. Yanosy, Jr., Jitender K. Vij, John P. Hufnagel, Paul Oldyzko, Anthony J. Dennett
Patented Case
View Patent ↗
Granted: Jan 12, 1988
Filed: Feb 25, 1985
Inventors
John A. Yanosy, Jr.
Jitender K. Vij
John P. Hufnagel
Paul Oldyzko
Anthony J. Dennett
Assignee (at issue)
US
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.