Granted Patent
Utility
US 5,664,563 · App. 08/352,658
Pneumatic system
Inventors:
Gary M. Schroeder, James W. Biondi, Douglas M. Johnston
Patented Case
View Patent ↗
Granted: Sep 9, 1997
Filed: Dec 9, 1994
Inventors
Gary M. Schroeder
James W. Biondi
Douglas M. Johnston
Assignee (at issue)
Cardiopulmonary Corp.
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.