Granted Patent
Utility
US 4,760,253 · App. 07/008,468
Mass spectrometer
Inventor:
Robert C. Hutton
Patented Case
View Patent ↗
Granted: Jul 26, 1988
Filed: Jan 29, 1987
Inventor
Robert C. Hutton
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.