Granted Patent
Utility
US 4,804,382 · App. 07/051,659
Artificial vessel
Inventors:
Marko Turina, Peter Bittmann
Patented Case
View Patent ↗
Granted: Feb 14, 1989
Filed: May 19, 1987
Inventors
Marko Turina
Peter Bittmann
Assignee (at issue)
Sulzer Brothers Limited
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.