Granted Patent
Utility
US 6,788,412 · App. 10/273,067
Process and device for the optical marking of a target region of a color measuring device on a measurement surface
Inventor:
Bruno Pfister
Patented Case
View Patent ↗
Granted: Sep 7, 2004
Filed: Oct 17, 2002
Inventor
Bruno Pfister
Assignee (at issue)
GretagMacbeth, LLC
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.