Granted Patent
Utility
US 4,593,196 · App. 06/641,203
Charged particle energy spectrometer
Inventor:
Kenneth H. Yates
Patented Case
View Patent ↗
Granted: Jun 3, 1986
Filed: Aug 16, 1984
Inventor
Kenneth H. Yates
Assignee (at issue)
VG Instruments Group Limited
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.