Granted Patent
Utility
US 6,006,747 · App. 08/821,753
Dry powder inhaler
Inventors:
Robert F. Eisele, Karen Davies, Jeffrey Chen, Bernard Greenspan
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Mar 20, 1997
Inventors
Robert F. Eisele
Karen Davies
Jeffrey Chen
Bernard Greenspan
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.