Granted Patent
Utility
US 5,897,593 · App. 08/902,407
Lordotic spinal implant
Inventors:
Douglas W. Kohrs, Paul M. Sand
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Jul 29, 1997
Inventors
Douglas W. Kohrs
Paul M. Sand
Assignee (at issue)
Sulzer Spine-Tech 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.