Granted Patent
Utility
US 4,954,154 · App. 07/290,857
Controlled release fertilizer gel composition and process for its production
Inventor:
Harvey M. Goertz
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Dec 27, 1988
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.