Granted Patent
Utility
US 5,068,534 · App. 07/623,401
High resolution plasma mass spectrometer
Inventors:
Neil Martin Bradshaw, Neil E. Sanderson
Patented Case
View Patent ↗
Granted: Nov 26, 1991
Filed: Dec 3, 1990
Inventors
Neil Martin Bradshaw
Neil E. Sanderson
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.