Granted Patent
Utility
US 4,593,167 · App. 06/404,301
Electronic microwave oven power supply
Inventor:
Ole K. Nilssen
Patented Case
View Patent ↗
Granted: Jun 3, 1986
Filed: Aug 2, 1982
Inventor
Ole K. Nilssen
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.