Granted Patent
Utility
US 4,289,730 · App. 06/133,981
Furnace with flue gas condensate neutralizer
Inventor:
Ronald S. Tomlinson
Patented Case
View Patent ↗
Granted: Sep 15, 1981
Filed: Mar 26, 1980
Inventor
Ronald S. Tomlinson
Assignee (at issue)
Heil-Quaker Corporation
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.