Granted Patent
Utility
US 6,131,423 · App. 09/173,697
Safety door-locking system for switchgear cabinets
Inventors:
Georg Xenaki, Holmar Schietzsch
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Oct 16, 1998
Inventors
Georg Xenaki
Holmar Schietzsch
Assignee (at issue)
Asea Brown Boveri, S.A.
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.