Granted Patent
Utility
US 4,989,974 · App. 07/294,028
Micro-flow cell
Inventors:
Klaus Anton, Peter Datwyler, Ernst Gassmann, Peter E. Jordi, Nico Pericles
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Jan 6, 1989
Inventors
Klaus Anton
Peter Datwyler
Ernst Gassmann
Peter E. Jordi
Nico Pericles
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.