Granted Patent
Utility
US 5,872,306 · App. 08/027,947
Real-time gas-chromatography mass-spectrometry trace vapor detection
Inventor:
James T. Arnold
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Feb 23, 1998
Inventor
James T. Arnold
Assignee (at issue)
Varian, Inc.
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.