Granted Patent
Utility
US 4,267,572 · App. 06/026,710
Apparatus for determining the concentration of the components of a sample
Inventor:
Wolfgang Witte
Patented Case
View Patent ↗
Granted: May 12, 1981
Filed: Apr 3, 1979
Inventor
Wolfgang Witte
Assignee (at issue)
Bodenseewerk Perkin-Elmer GmbH
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.