Granted Patent
Utility
US 6,149,271 · App. 09/178,471
Progressive addition lenses
Inventors:
Edgar V. Menezes, James S. Merritt, William Kokonaski
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Oct 23, 1998
Inventors
Edgar V. Menezes
James S. Merritt
William Kokonaski
Assignee (at issue)
INNOTECH LTD.
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.