Granted Patent
Utility
US 6,672,304 · App. 09/535,097
Inhalation actuated device for use with metered dose inhalers (MDIs)
Inventors:
Robert A. Casper, Frank A. Leith, David L. Gardner
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Mar 24, 2000
Inventors
Robert A. Casper
Frank A. Leith
David L. Gardner
Assignee (at issue)
Innovatio Devices LLC
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.