Granted Patent
Utility
US 5,289,390 · App. 07/888,228
Method for determining the electrical cable length of an active ring of a token ring local area network
Inventor:
Rod Unverrich
Patented Case
View Patent ↗
Granted: Feb 22, 1994
Filed: May 22, 1992
Inventor
Rod Unverrich
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.