Granted Patent
Utility
US 4,694,838 · App. 06/693,974
Loop coronary catheter
Inventors:
Bandula Wijayarthna, Glenn E. Newman
Patented Case
View Patent ↗
Granted: Sep 22, 1987
Filed: Jan 23, 1985
Inventors
Bandula Wijayarthna
Glenn E. Newman
Assignees (at issue)
MALLINCKRODT LLC
Duke University
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.