Granted Patent
Utility
US 4,731,073 · App. 06/612,997
Arterial graft prosthesis
Inventor:
Thomas C. Robinson
Patented Case
View Patent ↗
Granted: Mar 15, 1988
Filed: May 21, 1984
Inventor
Thomas C. Robinson
Assignee (at issue)
Thoratec Laboratories Corporation
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.