Granted Patent
Utility
US 5,637,553 · App. 08/688,046
Herbicide and fertilizer composition and method of using same
Inventors:
David J. Lehs, John Pickle
Patented Case
View Patent ↗
Granted: Jun 10, 1997
Filed: Jul 29, 1996
Inventors
David J. Lehs
John Pickle
Assignee (at issue)
Platte Chemical Co.
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.