Granted Patent
Utility
US 4,936,847 · App. 07/290,492
Revision knee prosthesis
Inventor:
Richard P. Manginelli
Patented Case
View Patent ↗
Granted: Jun 26, 1990
Filed: Dec 27, 1988
Inventor
Richard P. Manginelli
Assignee (at issue)
Johnson & Johnson Orthopaedics, 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.