Granted Patent
Utility
US 4,558,603 · App. 06/553,673
Needle assembly for introducing a carrier gas into a sample vessel
Inventors:
Wolfgang Chlosta, Wolfgang Riegger
Patented Case
View Patent ↗
Granted: Dec 17, 1985
Filed: Nov 21, 1983
Inventors
Wolfgang Chlosta
Wolfgang Riegger
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.