Granted Patent
Utility
US 6,776,487 · App. 10/281,275
Progressive spectacle lens having only a small change of binocular properties during a movement of glance
Inventors:
Walter Haimerl, Herbert Pfeiffer, Gregor Esser, Helmut Altheimer, Andrea Welk, Peter Baumbach, Rainer Dorsch
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Oct 28, 2002
Inventors
Walter Haimerl
Herbert Pfeiffer
Gregor Esser
Helmut Altheimer
Andrea Welk
Peter Baumbach
Rainer Dorsch
Assignee (at issue)
RODENSTOCK GMBH
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.