Granted Patent
Utility
US 4,940,325 · App. 07/320,674
Device for the investigation of highly resolved partial spectra of an echelle spectrum
Inventors:
Helmut Becker-Ross, Stefan Florek, Reinhard Tischendorf, Klaus-Eberhard Engel, Wolf-Ekkehard Matzke, Susanne Engel
Patented Case
View Patent ↗
Granted: Jul 10, 1990
Filed: Mar 8, 1989
Inventors
Helmut Becker-Ross
Stefan Florek
Reinhard Tischendorf
Klaus-Eberhard Engel
Wolf-Ekkehard Matzke
Susanne Engel
Assignee (at issue)
Akademie der Wissenchaften der DDR
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.