Granted Patent
Utility
US 4,295,854 · App. 06/078,367
Apparatus and methods for sample enrichment for flameless atomic absorption spectroscopy
Inventor:
Bernhard Huber
Patented Case
View Patent ↗
Granted: Oct 20, 1981
Filed: Sep 24, 1979
Inventor
Bernhard Huber
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.