Granted Patent
Utility
US 5,872,833 · App. 08/987,215
Telephone transaction processing as a part of a call transport
Inventor:
Gordon F. Scherer
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Dec 9, 1997
Inventor
Gordon F. Scherer
Assignee (at issue)
Matrixx Marketing Inc.
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.