Granted Patent
Utility
US 6,475,469 · App. 09/395,838
Compositions for removing tooth stains
Inventor:
R. Eric Montgomery
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Sep 14, 1999
Inventor
R. Eric Montgomery
Assignee (at issue)
Applied Dental Sciences, 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.