Granted Patent
Utility
US 6,830,589 · App. 10/153,188
Expandable fusion device and method
Inventor:
Richard A. Erickson
Patented Case
View Patent ↗
Granted: Dec 14, 2004
Filed: May 20, 2002
Inventor
Richard A. Erickson
Assignee (at issue)
Zimmer Spine, 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.