Granted Patent
Utility
US 6,029,667 · App. 09/019,843
Heart failure mask and methods for increasing negative intrathoracic pressures
Inventor:
Keith G. Lurie
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Feb 6, 1998
Inventor
Keith G. Lurie
Assignee (at issue)
CPRx, 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.