Granted Patent
Utility
US 6,771,950 · App. 09/660,069
Method and system for a wireless subscriber to initiate a calling party number trace
Inventors:
Lester B. Shupe, Kerry Neilson
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Sep 12, 2000
Inventors
Lester B. Shupe
Kerry Neilson
Assignee (at issue)
Qwest Communications International 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.