Granted Patent
Utility
US 5,420,425 · App. 08/250,156
Ion trap mass spectrometer system and method
Inventors:
Mark E. Bier, John E. P. Syka
Patented Case
View Patent ↗
Granted: May 30, 1995
Filed: May 27, 1994
Inventors
Mark E. Bier
John E. P. Syka
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.