Granted Patent
Utility
US 4,283,626 · App. 06/092,559
Methods and apparatus for analysis of mixtures by mass spectrometry
Inventor:
Melvin W. Siegel
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: Nov 8, 1979
Inventor
Melvin W. Siegel
Assignee (at issue)
Extranuclear Laboratories, 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.