Granted Patent
Utility
US 5,324,939 · App. 08/068,915
Method and apparatus for ejecting unwanted ions in an ion trap mass spectrometer
Inventors:
John N. Louris, Dennis M. Taylor
Patented Case
View Patent ↗
Granted: Jun 28, 1994
Filed: May 28, 1993
Inventors
John N. Louris
Dennis M. Taylor
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.