Granted Patent
Utility
US 4,623,351 · App. 06/601,929
Endoprosthetic bone joint devices
Inventor:
Jonathan Church
Patented Case
View Patent ↗
Granted: Nov 18, 1986
Filed: Apr 19, 1984
Inventor
Jonathan Church
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT CORPORATION
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.