Granted Patent
Utility
US 4,453,826 · App. 06/346,443
Double monochromator
Inventor:
Wolfgang Witte
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Feb 8, 1982
Inventor
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.