Granted Patent
Utility
US 4,819,971 · App. 07/092,401
Pressure vessel penetration fitting
Inventor:
Clinton W. Stallard, III
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Sep 2, 1987
Inventor
Clinton W. Stallard, III
Assignee (at issue)
Newport News Shipbuilding and Dry Dock Company
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.