Granted Patent
Utility
US 5,239,992 · App. 07/891,626
Loose powder inhaler with inhalation-actuated dosing piston
Inventors:
Jean-Louis Bougamont, Alain Behar
Patented Case
View Patent ↗
Granted: Aug 31, 1993
Filed: Jun 1, 1992
Inventors
Jean-Louis Bougamont
Alain Behar
Assignee (at issue)
Societe Francaise d'Aerosols et de Bouchage
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.