Granted Patent
Utility
US 6,584,920 · App. 10/245,135
System and method for adjusting air flow in air seeding applications
Inventor:
Mark Cresswell
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Sep 17, 2002
Inventor
Mark Cresswell
Assignee (at issue)
Bourgault Industries 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.