Granted Patent
Utility
US 5,901,883 · App. 08/741,240
Dispenser having nozzle insert with passages for discharge of two media
Inventor:
Stefan Ritsche
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: Oct 30, 1996
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.