Granted Patent
Utility
US 6,209,538 · App. 09/042,656
Dry powder medicament inhalator having an inhalation-activated flow diverting means for triggering delivery of medicament
Inventors:
Robert A. Casper, Frank A. Leith, David L. Gardner, John M. Snow, Zachary Wood Lyon, David Scott Farrar
Patented Case
View Patent ↗
Granted: Apr 3, 2001
Filed: Mar 17, 1998
Inventors
Robert A. Casper
Frank A. Leith
David L. Gardner
John M. Snow
Zachary Wood Lyon
David Scott Farrar
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.