Granted Patent
Utility
US 4,898,593 · App. 07/238,366
Autotransfusion bag holder
Inventors:
David Rork Swisher, F. Thane DeWeese
Patented Case
View Patent ↗
Granted: Feb 6, 1990
Filed: Aug 29, 1988
Inventors
David Rork Swisher
F. Thane DeWeese
Assignee (at issue)
Sherwood Medical Company
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.