Granted Patent
Utility
US 4,690,593 · App. 06/822,182
Tool for cutting locking cups from guide tube mounting screws in a nuclear reactor
Inventors:
John D. Nee, Joseph Hahn
Patented Case
View Patent ↗
Granted: Sep 1, 1987
Filed: Jan 24, 1986
Inventors
John D. Nee
Joseph Hahn
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.