Granted Patent
Utility
US 6,690,488 · App. 09/409,459
Method and apparatus for estimating the spatial frequency response of a digital image acquisition system from the images it produces
Inventor:
Steven R. Reuman
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Sep 30, 1999
Inventor
Steven R. Reuman
Assignee (at issue)
Polaroid 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.