Granted Patent
Utility
US 4,783,839 · App. 06/903,565
Image filtering apparatus and method
Inventor:
Jeffrey Colin Bamber
Patented Case
View Patent ↗
Granted: Nov 8, 1988
Filed: Aug 12, 1986
Inventor
Jeffrey Colin Bamber
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.