Granted Patent
Utility
US 6,223,536 · App. 09/421,928
Starting up a steam system, and steam system for carrying out the method
Inventor:
Erhard Liebig
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: Oct 21, 1999
Inventor
Erhard Liebig
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.