Granted Patent
Utility
US 5,269,749 · App. 07/880,688
Heat exchange device for inducing cardioplegia
Inventor:
Daniel C. Koturov
Patented Case
View Patent ↗
Granted: Dec 14, 1993
Filed: May 8, 1992
Inventor
Daniel C. Koturov
Assignee (at issue)
Cobe Laboratories, 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.