Granted Patent
Utility
US 4,619,209 · App. 06/763,520
Furnace construction
Inventors:
Joseph P. Traeger, Randolph J. Traeger, Mark A. Traeger
Patented Case
View Patent ↗
Granted: Oct 28, 1986
Filed: Aug 8, 1985
Inventors
Joseph P. Traeger
Randolph J. Traeger
Mark A. Traeger
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.