Granted Patent
Utility
US 5,031,703 · App. 07/439,676
Root crop harvester
Inventor:
John Fleming
Patented Case
View Patent ↗
Granted: Jul 16, 1991
Filed: Nov 22, 1989
Inventor
John Fleming
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.