Granted Patent
Utility
US 6,183,471 · App. 09/200,266
Spine distraction implant and method
Inventors:
James F. Zucherman, Ken Y. Hsu
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Nov 25, 1998
Inventors
James F. Zucherman
Ken Y. Hsu
Assignee (at issue)
St. Francis Medical Technologies, 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.