Granted Patent
Utility
US 6,358,047 · App. 09/918,147
Tooth shade analyzer system and methods
Inventor:
Maryann Lehmann
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Jul 30, 2001
Inventor
Maryann Lehmann
Assignee (at issue)
Shade Analyzing 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.