Granted Patent
Utility
US 4,950,893 · App. 07/344,128
Method and apparatus for enhanced ion spectra generation and detection in ion mobility spectrometry
Inventors:
Julio A. Reategui, Glenn E. Spangler, Joseph L. Mangum
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Apr 27, 1989
Inventors
Julio A. Reategui
Glenn E. Spangler
Joseph L. Mangum
Assignee (at issue)
Environmental Technologies, 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.