Granted Patent
Utility
US 5,970,428 · App. 08/947,068
Ground loop detector circuit and method
Inventor:
Stephen Brennan
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Oct 8, 1997
Inventor
Stephen Brennan
Assignee (at issue)
Elsag International N.V.
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.