Granted Patent
Utility
US 4,811,565 · App. 07/153,301
Steam turbine valve management system
Inventor:
Edward Y. Hwang
Patented Case
View Patent ↗
Granted: Mar 14, 1989
Filed: Feb 5, 1988
Inventor
Edward Y. Hwang
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.