Granted Patent
Utility
US 4,506,222 · App. 06/320,953
Methods of producing image information from objects
Inventors:
William A. Edelstein, James M. S. Hutchison, Glyn Johnson, Thomas W. T. Redpath, John R. Mallard
Patented Case
View Patent ↗
Granted: Mar 19, 1985
Filed: Nov 9, 1981
Inventors
William A. Edelstein
James M. S. Hutchison
Glyn Johnson
Thomas W. T. Redpath
John R. Mallard
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.