Granted Patent
Utility
US 4,850,194 · App. 07/129,172
Burner system
Inventors:
Cornel Fuglistaller, Jakob Keller, Thomas Sattelmayer
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Dec 7, 1987
Inventors
Cornel Fuglistaller
Jakob Keller
Thomas Sattelmayer
Assignee (at issue)
BBC Brown, Boveri & Company 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.