Granted Patent
Utility
US 5,862,200 · App. 08/680,833
Ground fault detector for T1 span equipment
Inventor:
Laurence L. Sheets
Patented Case
View Patent ↗
Granted: Jan 19, 1999
Filed: Jul 16, 1996
Inventor
Laurence L. Sheets
Assignee (at issue)
Teltrend, Inc.
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.