Granted Patent
Utility
US 4,302,286 · App. 06/032,799
Reactor vessel in-service inspection assembly and ultrasonic centering device
Inventors:
Bernard Lefebvre, William H. Krueger
Patented Case
View Patent ↗
Granted: Nov 24, 1981
Filed: Apr 24, 1979
Inventors
Bernard Lefebvre
William H. Krueger
Assignee (at issue)
Westinghouse Electric Company LLC
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.