Granted Patent
Utility
US 6,558,341 · App. 09/544,343
Continuous autotransfusion filtration system
Inventor:
David Rork Swisher
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Apr 6, 2000
Inventor
David Rork Swisher
Assignee (at issue)
SHERWOOD SERVICES AG
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.