Granted Patent
Utility
US 6,832,834 · App. 10/280,091
Method for computing a progressive spectacle lens and methods for manufacturing a spectacle lens of this kind
Inventors:
Walter Haimerl, Herbert Pfeiffer, Gregor Esser, Helmut Altheimer
Patented Case
View Patent ↗
Granted: Dec 21, 2004
Filed: Oct 25, 2002
Inventors
Walter Haimerl
Herbert Pfeiffer
Gregor Esser
Helmut Altheimer
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.