Granted Patent
Utility
US 5,172,888 · App. 07/853,158
Apparatus for sealingly enclosing a check valve
Inventor:
L. Ike Ezekoye
Patented Case
View Patent ↗
Granted: Dec 22, 1992
Filed: Feb 7, 1992
Inventor
L. Ike Ezekoye
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.