Granted Patent
Utility
US 6,231,433 · App. 09/425,062
Blank clamping device for a machine for trimming optical lenses
Inventors:
Bernard Brechemier, Michel Nauche
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Oct 22, 1999
Inventors
Bernard Brechemier
Michel Nauche
Assignee (at issue)
Essilor International (Compagnie Generale d'Optique)
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.