Granted Patent
Utility
US 5,194,731 · App. 07/734,852
Inductively coupled plasma spectroscopy
Inventor:
Ian Turner
Patented Case
View Patent ↗
Granted: Mar 16, 1993
Filed: Jul 23, 1991
Inventor
Ian Turner
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.