Granted Patent
Utility
US 5,796,733 · App. 08/675,165
Time division switching system
Inventor:
Joseph P. Norris
Patented Case
View Patent ↗
Granted: Aug 18, 1998
Filed: Jul 3, 1996
Inventor
Joseph P. Norris
Assignee (at issue)
Federal Signal 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.