Granted Patent
Utility
US 5,540,220 · App. 08/351,833
Pressure-limited, time-cycled pulmonary ventilation with volume-cycle override
Inventors:
Charles Gropper, Raymond A. Ellestad
Patented Case
View Patent ↗
Granted: Jul 30, 1996
Filed: Dec 8, 1994
Inventors
Charles Gropper
Raymond A. Ellestad
Assignee (at issue)
Bear Medical Systems, 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.