Granted Patent
Utility
US 5,692,498 · App. 08/403,009
CPR device having valve for increasing the duration and magnitude of negative intrathoracic pressures
Inventors:
Keith G. Lurie, Michael O. Sweeney, Barbara Gold
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Mar 10, 1995
Inventors
Keith G. Lurie
Michael O. Sweeney
Barbara Gold
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.