Granted Patent
Utility
US 4,729,217 · App. 07/051,246
Combined gas/steam power station plant
Inventor:
Rolf Kehlhofer
Patented Case
View Patent ↗
Granted: Mar 8, 1988
Filed: May 15, 1987
Inventor
Rolf Kehlhofer
Assignee (at issue)
BBC Brown, Boveri & Company Ltd.
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.