Granted Patent
Utility
US 5,203,510 · App. 07/884,053
Dual rotary impeller broadcast spreaders
Inventors:
Steve Courtney, James D. Amerine
Patented Case
View Patent ↗
Granted: Apr 20, 1993
Filed: May 14, 1992
Inventors
Steve Courtney
James D. Amerine
Assignee (at issue)
The O. M. Scott and Sons Company
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.