Granted Patent
Utility
US 4,428,654 · App. 06/255,694
Method and apparatus for simultaneously evaluating different spectral frequencies from different scene zones
Inventor:
Milton S. Dietz
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Apr 20, 1981
Inventor
Milton S. Dietz
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.