Granted Patent
Utility
US 4,335,289 · App. 05/971,717
Microwave oven
Inventor:
Duaine W. Smith
Patented Case
View Patent ↗
Granted: Jun 15, 1982
Filed: Dec 21, 1978
Inventor
Duaine W. Smith
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.