Granted Patent
Utility
US 5,725,528 · App. 08/799,720
Modular polyaxial locking pedicle screw
Inventors:
Joseph P. Errico, Thomas J. Errico, James D. Ralph, Steven Tatar
Patented Case
View Patent ↗
Granted: Mar 10, 1998
Filed: Feb 12, 1997
Inventors
Joseph P. Errico
Thomas J. Errico
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.