Granted Patent
Utility
US 4,989,096 · App. 07/352,521
Producing half-tone images of higher resolution through interpolation of original data
Inventors:
Graham Webb, Richard A. Kirk
Patented Case
View Patent ↗
Granted: Jan 29, 1991
Filed: May 16, 1989
Inventors
Graham Webb
Richard A. Kirk
Assignee (at issue)
Crosfield Electronics Limited
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.