Granted Patent
Utility
US 5,877,494 · App. 08/687,931
Beam error correction using movable correction element
Inventors:
David B. Larsen, Laurence S. Blake, Norman F. Rolfe, Henry A. Kelley, Frank Scholten
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: Jul 29, 1996
Inventors
David B. Larsen
Laurence S. Blake
Norman F. Rolfe
Henry A. Kelley
Frank Scholten
Assignee (at issue)
Agfa Division--Bayer Corporation
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.