Granted Patent
Utility
US 4,958,079 · App. 07/313,022
Detector for scanning electron microscopy apparatus
Inventor:
John Gray
Patented Case
View Patent ↗
Granted: Sep 18, 1990
Filed: Feb 21, 1989
Inventor
John Gray
Assignee (at issue)
Galileo Electro-Optics Corps.
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.