Granted Patent
Utility
US 5,609,576 · App. 08/305,904
Fluid flow impedance monitoring system
Inventors:
Gregory I. Voss, Robert D. Butterfield, Gail D. Baura, Casper W. Barnes
Patented Case
View Patent ↗
Granted: Mar 11, 1997
Filed: Sep 13, 1994
Inventors
Gregory I. Voss
Robert D. Butterfield
Gail D. Baura
Casper W. Barnes
Assignee (at issue)
IVAC 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.