Granted Patent
Utility
US 5,876,196 · App. 08/760,410
Burner for a heat generator
Inventors:
Hans Peter Knopfel, Thomas Ruck
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: Dec 4, 1996
Inventors
Hans Peter Knopfel
Thomas Ruck
Assignee (at issue)
ABB RESEARCH 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.