Granted Patent
Utility
US 6,740,837 · App. 09/986,878
Contact zone for a power breaker
Inventors:
Lukas Zehnder, Michael Mendik
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Nov 13, 2001
Inventors
Lukas Zehnder
Michael Mendik
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.