Granted Patent
Utility
US 4,253,241 · App. 06/092,868
Bore gauge
Inventor:
William F. Nanstiel
Patented Case
View Patent ↗
Granted: Mar 3, 1981
Filed: Nov 8, 1979
Inventor
William F. Nanstiel
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.