Granted Patent
Utility
US 6,421,672 · App. 09/361,243
Apparatus for and method of disambiguation of directory listing searches utilizing multiple selectable secondary search keys
Inventors:
Alexander I. McAllister, James W. McKinley, Jr.
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Jul 27, 1999
Inventors
Alexander I. McAllister
James W. McKinley, Jr.
Assignee (at issue)
Verizon Services Corp.
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.