Granted Patent
Utility
US 5,285,477 · App. 07/810,632
Balanced line driver for local area networks or the like
Inventor:
Robert H. Leonowich
Patented Case
View Patent ↗
Granted: Feb 8, 1994
Filed: Dec 18, 1991
Inventor
Robert H. Leonowich
Assignee (at issue)
AT&T Bell Laboratories
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.