Granted Patent
Utility
US 5,285,064 · App. 08/040,073
Method and apparatus for introduction of liquid effluent into mass spectrometer and other gas-phase or particle detectors
Inventor:
Ross C. Willoughby
Patented Case
View Patent ↗
Granted: Feb 8, 1994
Filed: Mar 30, 1993
Inventor
Ross C. Willoughby
Assignee (at issue)
Extrel 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.