Granted Patent
Utility
US 5,606,504 · App. 08/389,992
Crop swath-width measurement using acoustic transducers
Inventor:
David P. Andersen
Patented Case
View Patent ↗
Granted: Feb 25, 1997
Filed: Feb 17, 1995
Inventor
David P. Andersen
Assignee (at issue)
LOCKHEED MARTIN 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.