Granted Patent
Utility
US 4,848,774 · App. 07/091,224
Reactor coolant pump hydrostatic sealing assembly with externally pressurized hydraulic balance chamber
Inventors:
Charles P. Nyilas, Richard F. Guardiani
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: Aug 31, 1987
Inventors
Charles P. Nyilas
Richard F. Guardiani
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.