Granted Patent
Utility
US 4,643,580 · App. 06/678,779
Photometer head for small test volumes
Inventors:
Jurgen Gross, Reinhard Dinges
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Dec 6, 1984
Inventors
Jurgen Gross
Reinhard Dinges
Assignee (at issue)
Hoechst 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.