Granted Patent
Utility
US 5,022,071 · App. 07/292,584
Two-way voice & digital data analyzer for telephones
Inventors:
Forrest S. Mozer, Shiu L. Chan
Patented Case
View Patent ↗
Granted: Jun 4, 1991
Filed: Dec 30, 1988
Inventors
Forrest S. Mozer
Shiu L. Chan
Assignee (at issue)
Electronic Speech Systems
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.