Granted Patent
Utility
US 5,113,056 · App. 07/550,759
Stored-spring-energy actuator mechanism for a high-voltage circuit breaker
Inventor:
Max Kuhn
Patented Case
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Granted: May 12, 1992
Filed: Jul 10, 1990
Inventor
Max Kuhn
Assignee (at issue)
Sprecher Energie 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.