Granted Patent
Utility
US 4,248,355 · App. 06/063,629
Closure for sample vials
Inventors:
Bruno Kolb, Dietrich Boege, Peter Pospisil, Hubert Riegger
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Aug 3, 1979
Inventors
Bruno Kolb
Dietrich Boege
Peter Pospisil
Hubert 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.