Granted Patent
Utility
US 4,932,413 · App. 07/322,363
Guidewire exchange catheter
Inventors:
Rick L. Shockey, Mark A. Rydell
Patented Case
View Patent ↗
Granted: Jun 12, 1990
Filed: Mar 13, 1989
Inventors
Rick L. Shockey
Mark A. Rydell
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.