Granted Patent
Utility
US 4,283,934 · App. 06/092,247
Pyrometric temperature measurements in flameless atomic absorption spectroscopy
Inventor:
Gerhard Siess
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Nov 7, 1979
Inventor
Gerhard Siess
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.