Granted Patent
Utility
US 5,680,404 · App. 08/460,733
Cycling error count for link maintenance
Inventor:
Thomas A. Gray
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Jun 2, 1995
Inventor
Thomas A. Gray
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.