Granted Patent
Utility
US 4,868,509 · App. 07/197,255
Method and apparatus for detecting magnetron power supply failure
Inventors:
Michael G. Ury, William J. Jones
Patented Case
View Patent ↗
Granted: Sep 19, 1989
Filed: May 23, 1988
Inventors
Michael G. Ury
William J. Jones
Assignee (at issue)
Fusion Systems 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.