Granted Patent
Utility
US 5,387,233 · App. 08/147,330
Intravenous cardiac lead with improved fixation and method
Inventors:
Clifton A. Alferness, John R. Helland
Patented Case
View Patent ↗
Granted: Feb 7, 1995
Filed: Nov 3, 1993
Inventors
Clifton A. Alferness
John R. Helland
Assignee (at issue)
INCON-TROL CORP.
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.