Granted Patent
Utility
US 4,883,964 · App. 07/288,359
Optical method and apparatus for discriminating between crop stalks and weed stalks in a non-contact row crop harvester guidance system
Inventor:
Carl E. Bohman
Patented Case
View Patent ↗
Granted: Nov 28, 1989
Filed: Dec 22, 1988
Inventor
Carl E. Bohman
Assignee (at issue)
Ford New Holland, Inc.
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.