Granted Patent
Utility
US 4,597,531 · App. 06/648,660
Material spreader
Inventor:
Jay R. Kise
Patented Case
View Patent ↗
Granted: Jul 1, 1986
Filed: Sep 7, 1984
Inventor
Jay R. Kise
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.