Granted Patent
Utility
US 4,427,009 · App. 06/279,175
Integrated cardioplegia delivery system
Inventors:
Edward S. Wells, Spencer K. Ford, Jack E. Werner, Erin J. Lindsay
Patented Case
View Patent ↗
Granted: Jan 24, 1984
Filed: Jun 30, 1981
Inventors
Edward S. Wells
Spencer K. Ford
Jack E. Werner
Erin J. Lindsay
Assignee (at issue)
Minnesota Mining and Manufacturing 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.