Granted Patent
Utility
US 4,616,360 · App. 06/577,496
Peripheral control for a digital telephone system
Inventor:
Conrad W. Lewis
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Feb 6, 1984
Inventor
Conrad W. Lewis
Assignee (at issue)
Mitel 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.