Granted Patent
Utility
US 6,576,897 · App. 09/661,162
Lens-free ion collision cell
Inventors:
Urs Steiner, Hansjorg J. Cueni
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Sep 13, 2000
Inventors
Urs Steiner
Hansjorg J. Cueni
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.