Granted Patent
Utility
US 5,044,935 · App. 07/491,734
Method and apparatus for operating a firing plant using fossil fuels
Inventor:
Hans Peter
Patented Case
View Patent ↗
Granted: Sep 3, 1991
Filed: Mar 12, 1990
Inventor
Hans Peter
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.