Granted Patent
Utility
US 4,994,033 · App. 07/356,520
Intravascular drug delivery dilatation catheter
Inventors:
Rick L. Shockey, Robert A. Van Tassel
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: May 25, 1989
Inventors
Rick L. Shockey
Robert A. Van Tassel
Assignee (at issue)
Schneider (USA) Inc.
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.