Granted Patent
Utility
US 5,396,064 · App. 08/180,174
Quadrupole trap ion isolation method
Inventor:
Gregory J. Wells
Patented Case
View Patent ↗
Granted: Mar 7, 1995
Filed: Jan 11, 1994
Inventor
Gregory J. Wells
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.