Granted Patent
Utility
US 5,035,609 · App. 07/456,722
Jet burner construction, heating apparatus utilizing the jet burner construction and methods of making the same
Inventor:
Fred Riehl
Patented Case
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Granted: Jul 30, 1991
Filed: Dec 26, 1989
Inventor
Fred Riehl
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.