Granted Patent
Utility
US 6,807,495 · App. 10/373,029
Plausibility checking of voltage transformers in substations
Inventor:
Wolfgang Wimmer
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: Feb 26, 2003
Inventor
Wolfgang Wimmer
Assignee (at issue)
ABB Schweiz AG
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.