Granted Patent
Utility
US 5,145,116 · App. 07/665,336
Spread shifter device for broadcast spreaders
Inventor:
Paul V. Shaver
Patented Case
View Patent ↗
Granted: Sep 8, 1992
Filed: Mar 6, 1991
Inventor
Paul V. Shaver
Assignee (at issue)
True Temper Hardware Co.
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.