Granted Patent
Utility
US 6,126,439 · App. 08/909,737
Premix burner
Inventors:
Hans Peter Knopfel, Giacomo Bolis
Patented Case
View Patent ↗
Granted: Oct 3, 2000
Filed: Aug 12, 1997
Inventors
Hans Peter Knopfel
Giacomo Bolis
Assignee (at issue)
ABB Alstom Power (Switzerland) 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.