Granted Patent
Utility
US 4,300,835 · App. 06/146,728
Attenuator for stray light produced in monochromators
Inventors:
Dieter Schiemann, Wolfgang Witte
Patented Case
View Patent ↗
Granted: Nov 17, 1981
Filed: May 2, 1980
Inventors
Dieter Schiemann
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.