Granted Patent
Utility
US 5,685,705 · App. 08/394,746
Method and appliance for flame stabilization in premixing burners
Inventor:
Hans Peter Knopfel
Patented Case
View Patent ↗
Granted: Nov 11, 1997
Filed: Feb 27, 1995
Inventor
Hans Peter Knopfel
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.