Granted Patent
Utility
US 5,997,503 · App. 09/022,608
Catheter with distally distending balloon
Inventors:
Allan F. Willis, Kelly J. Christian, Mike Kenowski
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Feb 12, 1998
Inventors
Allan F. Willis
Kelly J. Christian
Mike Kenowski
Assignee (at issue)
Ballard Medical Products
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.