Granted Patent
Utility
US 4,886,501 · App. 07/307,244
Implantable device
Inventors:
Jimmie T. Johnston, Edward J. Sampson
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Feb 6, 1989
Inventors
Jimmie T. Johnston
Edward J. Sampson
Assignee (at issue)
Shiley Infusaid, 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.