Granted Patent
Utility
US 4,298,925 · App. 06/056,261
Transistorized invertor
Inventor:
John R. Melling
Patented Case
View Patent ↗
Granted: Nov 3, 1981
Filed: Jul 10, 1979
Inventor
John R. Melling
Assignee (at issue)
Plessey Handel Und Investments AG
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.