Granted Patent
Utility
US 4,612,440 · App. 06/648,891
Device for adjusting slit widths in spectrometers
Inventors:
Curt Brunnee, Peter Dobberstein, Gunter Kappus
Patented Case
View Patent ↗
Granted: Sep 16, 1986
Filed: Sep 10, 1984
Inventors
Curt Brunnee
Peter Dobberstein
Gunter Kappus
Assignee (at issue)
Finnigan MAT 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.