Granted Patent
Utility
US 4,819,637 · App. 07/092,079
System for artificial vessel embolization and devices for use therewith
Inventors:
Ray H. Dormandy, Jr., Julie Bell
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Sep 1, 1987
Inventors
Ray H. Dormandy, Jr.
Julie Bell
Assignee (at issue)
Interventional Therapeutics 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.