Granted Patent
Utility
US 6,097,798 · App. 09/112,154
Electronic surveillance in a public switched telephone network
Inventors:
Raymond F. Albers, Charles H. Eppert, III, Barry Paul Pershan, Daniel C. Michaelis, Michael G. Pilkerton, Robert D. Farris, Christine W. Huff
Patented Case
View Patent ↗
Granted: Aug 1, 2000
Filed: Jul 9, 1998
Inventors
Raymond F. Albers
Charles H. Eppert, III
Barry Paul Pershan
Daniel C. Michaelis
Michael G. Pilkerton
Robert D. Farris
Christine W. Huff
Assignee (at issue)
Bell Atlantic Network Services
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.