Granted Patent
Utility
US 5,673,687 · App. 08/653,362
Humidifier for a ventilator and an associated attachment
Inventors:
Darwin B. Dobson, Gregg D. Keefe, Douglas R. Ogden, Eugene Pennington Smith
Patented Case
View Patent ↗
Granted: Oct 7, 1997
Filed: May 24, 1996
Inventors
Darwin B. Dobson
Gregg D. Keefe
Douglas R. Ogden
Eugene Pennington Smith
Assignee (at issue)
Respironics, Inc.
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.