Granted Patent
Utility
US 6,474,814 · App. 09/657,562
Multifocal ophthalmic lens with induced aperture
Inventor:
Richard A. Griffin
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Sep 8, 2000
Inventor
Richard A. Griffin
Assignee (at issue)
Florida Optical Engineering, 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.