Granted Patent
Utility
US 4,527,049 · App. 06/578,723
Microprocessor controlled electric range
Inventors:
Calvin J. Thomas, William Day
Patented Case
View Patent ↗
Granted: Jul 2, 1985
Filed: Feb 9, 1984
Inventors
Calvin J. Thomas
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.