Granted Patent
Utility
US 4,925,628 · App. 07/070,759
Sample preparation chamber with mixer/grinder and sample aliquot isolation
Inventors:
Andre Metzger, Peter Grimm, Andre J. Nohl, Vance J. Nau
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Jul 7, 1987
Inventors
Andre Metzger
Peter Grimm
Andre J. Nohl
Vance J. Nau
Assignee (at issue)
Ciba-Geigy
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.