Granted Patent
Utility
US 6,257,454 · App. 09/300,887
Media dispenser
Inventor:
Stefan Ritsche
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Apr 28, 1999
Inventor
Stefan Ritsche
Assignee (at issue)
Ing. Erich Pfeiffer 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.