Granted Patent
Utility
US 5,982,501 · App. 09/075,202
Reflectance measuring device
Inventors:
Christian Benz, Thomas Senn
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: May 11, 1998
Inventors
Christian Benz
Thomas Senn
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.