Granted Patent
Utility
US 5,358,073 · App. 08/024,088
Method and apparatus for tensioning an accumulator spring of a drive of a high-voltage or medium-voltage power circuit breaker
Inventor:
Hans-Rudolf Wothrich
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Mar 1, 1993
Inventor
Hans-Rudolf Wothrich
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.