Granted Patent
Utility
US 5,599,374 · App. 08/311,672
Process for producing improved sulfur-coated urea slow release fertilizers
Inventor:
John H. Detrick
Patented Case
View Patent ↗
Granted: Feb 4, 1997
Filed: Sep 23, 1994
Inventor
John H. Detrick
Assignee (at issue)
RLC Technologies, L.L.C.
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.