Granted Patent
Utility
US 5,652,196 · App. 08/410,568
Timed release of water-soluble plant nutrients
Inventors:
Narender P. Luthra, Darwin Scott Bull, Garrard L. Hargrove
Patented Case
View Patent ↗
Granted: Jul 29, 1997
Filed: Mar 24, 1995
Inventors
Narender P. Luthra
Darwin Scott Bull
Garrard L. Hargrove
Assignee (at issue)
OMS Investments, 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.