Granted Patent
Utility
US 5,339,352 · App. 07/953,675
Directory assistance call completion via mobile systems
Inventors:
Michael Armstrong, Jennifer L. Glacken
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Oct 1, 1992
Inventors
Michael Armstrong
Jennifer L. Glacken
Assignee (at issue)
Bell Atlantic Network Services
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.