Granted Patent
Utility
US 4,301,398 · App. 06/154,503
Method and apparatus for controlling a resonant power module
Inventor:
Robert W. Johnson
Patented Case
View Patent ↗
Granted: Nov 17, 1981
Filed: May 29, 1980
Inventor
Robert W. Johnson
Assignee (at issue)
Exide Electronics Corporation
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.