Granted Patent
Utility
US 6,029,663 · App. 08/841,994
Dry powder inhaler delivery system
Inventors:
Robert F. Eisele, Allan Cameron, David Titzler, Leonard Porche
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Apr 22, 1997
Inventors
Robert F. Eisele
Allan Cameron
David Titzler
Leonard Porche
Assignee (at issue)
Dura Pharmaceuticals, Icn.
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.