Granted Patent
Utility
US 4,655,296 · App. 06/765,946
Farming implement with wheel depth control
Inventors:
Francois P. Bourgault, Joseph L. Bourgault
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Aug 15, 1985
Inventors
Francois P. Bourgault
Joseph L. Bourgault
Assignee (at issue)
F. P. Bourgault Industries
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.