Granted Patent
Utility
US 5,347,576 · App. 07/744,576
Line interface unit retrofit circuit
Inventor:
Steven C. Taylor
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Aug 15, 1991
Inventor
Steven C. Taylor
Assignee (at issue)
Verilink 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.