Granted Patent
Utility
US 5,259,395 · App. 07/821,107
Pacemaker lead with extendable retractable lockable fixing helix
Inventor:
Hong Li
Patented Case
View Patent ↗
Granted: Nov 9, 1993
Filed: Jan 15, 1992
Inventor
Hong Li
Assignee (at issue)
Siemens Pacesetter, 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.