Granted Patent
Utility
US 6,237,590 · App. 08/932,489
Dry powder delivery system apparatus
Inventors:
Marvin Allan Leedom, Allan E. White
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Sep 18, 1997
Inventors
Marvin Allan Leedom
Allan E. White
Assignee (at issue)
Delsys Pharmaceutical Company
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.