Granted Patent
Utility
US 4,883,957 · App. 07/179,426
Mass spectrometer including cooling for the ion collection amplifiers
Inventors:
Nigel Kinge, Neil E. Sanderson, David Mills
Patented Case
View Patent ↗
Granted: Nov 28, 1989
Filed: Apr 8, 1988
Inventors
Nigel Kinge
Neil E. Sanderson
David Mills
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.