Granted Patent
Utility
US 5,829,978 · App. 08/966,817
Surface roughening of self-tapping dental implants
Inventor:
Thomas H. Day
Patented Case
View Patent ↗
Granted: Nov 3, 1998
Filed: Nov 10, 1997
Inventor
Thomas H. Day
Assignee (at issue)
Sulzer Calcitek 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.