Granted Patent
Utility
US 5,517,565 · App. 08/269,133
Integrated ringer relay circuit and method
Inventor:
Gerald M. Cotreau
Patented Case
View Patent ↗
Granted: May 14, 1996
Filed: Jun 30, 1994
Inventor
Gerald M. Cotreau
Assignee (at issue)
HARRIS 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.