Granted Patent
Utility
US 4,716,018 · App. 06/797,331
End plug with truncated tapered leading end configuration
Inventors:
David A. Boatwright, Wade H. Widener
Patented Case
View Patent ↗
Granted: Dec 29, 1987
Filed: Nov 12, 1985
Inventors
David A. Boatwright
Wade H. Widener
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.