Granted Patent
Utility
US 4,240,397 · App. 06/006,135
Fuel saver oven
Inventor:
Harry W. Seidel
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Jan 24, 1979
Inventor
Harry W. Seidel
Assignee (at issue)
Raytheon Company
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.