Granted Patent
Utility
US 6,472,659 · App. 09/342,152
Method for measuring ionic currents, and a catching device therefor
Inventors:
Heinz Lerche, Johannes Schwieters
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Jun 15, 1999
Inventors
Heinz Lerche
Johannes Schwieters
Assignee (at issue)
Thermo 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.