Granted Patent
Utility
US 6,811,543 · App. 10/142,688
Method for introducing a powdered substance into a nostril
Inventors:
Erik Keldmann, Troels Keldmann, Jorge Martinez Quesada, Ricardo Palacios Pelaez
Patented Case
View Patent ↗
Granted: Nov 2, 2004
Filed: May 10, 2002
Inventors
Erik Keldmann
Troels Keldmann
Jorge Martinez Quesada
Ricardo Palacios Pelaez
Assignee (at issue)
Direct Haler A/S
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.