Granted Patent
Utility
US 3,983,863 · App. 05/583,043
Heart support for coronary artery surgery
Inventors:
Walter H. Janke, Milford Barron
Patented Case
View Patent ↗
Granted: Oct 5, 1976
Filed: Jun 2, 1975
Inventors
Walter H. Janke
Milford Barron
Assignee (at issue)
American Hospital Supply Corp.
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.