Granted Patent
Utility
US 4,762,183 · App. 06/917,110
Farming implement with adjustable earthworking tool framer
Inventors:
Francois P. Bourgault, Joseph L. Bourgault
Patented Case
View Patent ↗
Granted: Aug 9, 1988
Filed: Oct 9, 1986
Inventors
Francois P. Bourgault
Joseph L. Bourgault
Assignee (at issue)
F. P. Bourgault Industries Cultivator Division Ltd.
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.