Granted Patent
Utility
US 5,752,957 · App. 08/799,721
Polyaxial mechanism for use with orthopaedic implant devices
Inventors:
James D. Ralph, Steven Tatar
Patented Case
View Patent ↗
Granted: May 19, 1998
Filed: Feb 12, 1997
Inventors
James D. Ralph
Steven Tatar
Assignee (at issue)
THIRD MILLENNIUM ENGINEERING
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.