Granted Patent
Utility
US 5,648,917 · App. 08/535,827
Self-monitoring circuit, especially for electrical equipment, and in particular for a high tension SF.sub.6 circuit breaker
Inventors:
Gerard Ebersohl, Olfa Chetay
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Sep 28, 1995
Inventors
Gerard Ebersohl
Olfa Chetay
Assignee (at issue)
GEC Alsthom T&D SA
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.