Granted Patent
Utility
US 6,480,591 · App. 09/516,316
Real-time call rating and debiting system and method for multiple calls
Inventors:
Robert Penfield, Patrick J. MeLampy
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Mar 1, 2000
Inventors
Robert Penfield
Patrick J. MeLampy
Assignee (at issue)
Priority Call Management, 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.