Granted Patent
Utility
US 4,919,121 · App. 07/306,047
Inflation device for angioplasty catheter
Inventors:
Mark A. Rydell, Rick L. Shockey
Patented Case
View Patent ↗
Granted: Apr 24, 1990
Filed: Feb 6, 1989
Inventors
Mark A. Rydell
Rick L. Shockey
Assignee (at issue)
Schneider (U.S.A.), Inc. A Pfizer Company
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.