Granted Patent
Utility
US 5,148,668 · App. 07/642,407
Combined gas/steam turbine power station plant
Inventor:
Hansulrich Frutschi
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Jan 17, 1991
Inventor
Hansulrich Frutschi
Assignee (at issue)
Asea Brown Boveri, S.A.
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.