Granted Patent
Utility
US 6,766,081 · App. 09/782,882
Focal length dispersion compensation for field curvature
Inventors:
Samuel P. Weaver, Raymond Cahill
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Feb 13, 2001
Inventors
Samuel P. Weaver
Raymond Cahill
Assignee (at issue)
PTS 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.