Granted Patent
Utility
US 4,309,947 · App. 06/134,078
Mounting arrangement for condensate neutralizer in a furnace
Inventor:
Edward A. Ketterer
Patented Case
View Patent ↗
Granted: Jan 12, 1982
Filed: Mar 26, 1980
Inventor
Edward A. Ketterer
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.