Granted Patent
Utility
US 6,496,633 · App. 09/619,109
Light guide
Inventor:
Marc Cresens
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Jul 19, 2000
Inventor
Marc Cresens
Assignee (at issue)
Agfa-Gevaert NV
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.