Granted Patent
Utility
US 6,720,554 · App. 09/864,878
Triple quadrupole mass spectrometer with capability to perform multiple mass analysis steps
Inventor:
James Hager
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: May 25, 2001
Inventor
James Hager
Assignee (at issue)
MDS LLC
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.