Granted Patent
Utility
US 4,275,414 · App. 06/000,932
Tube plug weld inspection apparatus
Inventor:
George W. Norris
Patented Case
View Patent ↗
Granted: Jun 23, 1981
Filed: Jan 4, 1979
Inventor
George W. Norris
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.