Granted Patent
Utility
US 4,281,669 · App. 05/824,296
Pacemaker electrode with porous system
Inventor:
David C. MacGregor
Patented Case
View Patent ↗
Granted: Aug 4, 1981
Filed: Aug 15, 1977
Inventor
David C. MacGregor
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.