Granted Patent
Utility
US 4,411,683 · App. 06/288,456
Process of preparing solid controlled release fertilizer composition
Inventor:
Harvey M. Goertz
Patented Case
View Patent ↗
Granted: Oct 25, 1983
Filed: Jul 30, 1981
Inventor
Harvey M. Goertz
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.