Granted Patent
Utility
US 5,828,731 · App. 08/754,151
Method and apparatus for non-offensive termination of an outbound call and for detection of an answer of an outbound call by an answering machine
Inventors:
Aleksander Szlam, Chester P. Quinn
Patented Case
View Patent ↗
Granted: Oct 27, 1998
Filed: Nov 22, 1996
Inventors
Aleksander Szlam
Chester P. Quinn
Assignee (at issue)
Inventio AG
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.