Granted Patent
Utility
US 4,431,889 · App. 06/513,783
Combination microwave and convection oven
Inventors:
Domenick Saponara, William Day
Patented Case
View Patent ↗
Granted: Feb 14, 1984
Filed: Jul 14, 1983
Inventors
Domenick Saponara
William Day
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.