Granted Patent
Utility
US 4,547,213 · App. 06/475,142
Rock phosphate/sulfur fertilizer composition
Inventor:
Jerry Stoller
Patented Case
View Patent ↗
Granted: Oct 15, 1985
Filed: Mar 14, 1983
Inventor
Jerry Stoller
Assignee (at issue)
Stoller Enterprises, Inc.
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.