Granted Patent
Utility
US 5,295,207 · App. 07/977,296
Optical apparatus for measuring current in a grounded metal-clad installation
Inventors:
Jean-Pierre Dupraz, Edmond Thuries
Patented Case
View Patent ↗
Granted: Mar 15, 1994
Filed: Nov 16, 1992
Inventors
Jean-Pierre Dupraz
Edmond Thuries
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.