Granted Patent
Utility
US 4,608,460 · App. 06/651,375
Comprehensive automatic directory assistance apparatus and method thereof
Inventors:
Nicholas Carter, Walter Guilarte, Ravindra T. Masand, Terrance Martin, Francisco A. Middleton, Santanu Das
Patented Case
View Patent ↗
Granted: Aug 26, 1986
Filed: Sep 17, 1984
Inventors
Nicholas Carter
Walter Guilarte
Ravindra T. Masand
Terrance Martin
Francisco A. Middleton
Santanu Das
Assignee (at issue)
ITT Corporation
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.