Granted Patent
Utility
US 5,506,901 · App. 08/130,974
Call eavesdropping arrangement
Inventor:
Robert D. Reeder
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: Oct 4, 1993
Inventor
Robert D. Reeder
Assignee (at issue)
AT&T 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.