Granted Patent
Utility
US 6,066,820 · App. 09/189,971
Spring drive mechanism for switchgear, in particular a circuit breaker
Inventor:
Rolf Niklaus
Patented Case
View Patent ↗
Granted: May 23, 2000
Filed: Nov 12, 1998
Inventor
Rolf Niklaus
Assignee (at issue)
GEC Alsthom Limited
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.