Granted Patent
Utility
US 5,676,701 · App. 08/480,762
Low wear artificial spinal disc
Inventors:
Hansen Yuan, Chih-I Lin, James A. Davidson, Laura C. Small, Thomas A. Carls
Patented Case
View Patent ↗
Granted: Oct 14, 1997
Filed: Jun 7, 1995
Inventors
Hansen Yuan
Chih-I Lin
James A. Davidson
Laura C. Small
Thomas A. Carls
Assignee (at issue)
SMITH & NEPHEW, 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.