Granted Patent
Utility
US 4,433,971 · App. 06/279,174
Integrated cardioplegia delivery system
Inventors:
Erin J. Lindsay, Jeffrey Thomas Snyder
Patented Case
View Patent ↗
Granted: Feb 28, 1984
Filed: Jun 30, 1981
Inventors
Erin J. Lindsay
Jeffrey Thomas Snyder
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.