Granted Patent
Utility
US 4,374,669 · App. 06/095,151
Cardiovascular prosthetic devices and implants with porous systems
Inventor:
David C. Mac Gregor
Patented Case
View Patent ↗
Granted: Feb 22, 1983
Filed: Nov 19, 1979
Inventor
David C. Mac Gregor
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.