Granted Patent
Utility
US 6,132,210 · App. 09/385,615
Tooth shade analyzer system and methods
Inventor:
Maryann Lehmann
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Aug 30, 1999
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.