Granted Patent
Utility
US 4,985,625 · App. 07/120,747
Transfer line for mass spectrometer apparatus
Inventor:
James Walter Hurst
Patented Case
View Patent ↗
Granted: Jan 15, 1991
Filed: Nov 12, 1987
Inventor
James Walter Hurst
Assignee (at issue)
Finnigan Corporation
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.