Granted Patent
Utility
US 6,407,964 · App. 09/554,104
Device for examining sheet-like articles using ultrasound
Inventors:
Heinz Hornung, Ulrich Schanda
Patented Case
View Patent ↗
Granted: Jun 18, 2002
Filed: Jul 28, 2000
Inventors
Heinz Hornung
Ulrich Schanda
Assignee (at issue)
GIESECKE & DEVRIENT 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.