Granted Patent
Utility
US 4,431,888 · App. 06/209,848
Microwave oven with improved feed structure
Inventor:
James E. Simpson
Patented Case
View Patent ↗
Granted: Feb 14, 1984
Filed: Nov 24, 1980
Inventor
James E. Simpson
Assignee (at issue)
Amana Refrigeration, Inc.
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.