Granted Patent
Utility
US 4,431,893 · App. 06/324,146
Front programmable timer for a microwave oven
Inventor:
Stephen A. Levie
Patented Case
View Patent ↗
Granted: Feb 14, 1984
Filed: Nov 23, 1981
Inventor
Stephen A. Levie
Assignee (at issue)
Litton Systems, 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.