Granted Patent
Utility
US 5,029,757 · App. 07/496,242
Auto-fold sprayer
Inventors:
Gerard Bourgault, Stanley Joseph Boyko
Patented Case
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Granted: Jul 9, 1991
Filed: Mar 20, 1990
Inventors
Gerard Bourgault
Stanley Joseph Boyko
Assignee (at issue)
F. P. Bourgault Industries Air Seeder 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.