Granted Patent
Utility
US 4,259,572 · App. 06/039,478
Ionization of organic substances on conveyor means in mass spectrometer
Inventors:
Curt Brunnee, Jochen Franzen, Stefan Meier
Patented Case
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Granted: Mar 31, 1981
Filed: May 16, 1979
Inventors
Curt Brunnee
Jochen Franzen
Stefan Meier
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.