Granted Patent
Utility
US 5,364,438 · App. 08/151,280
Fluid urea-containing fertilizer
Inventors:
Charles W. Weston, Lawrence Alan Peacock, Willis Thornsberry
Patented Case
View Patent ↗
Granted: Nov 15, 1994
Filed: Nov 12, 1993
Inventors
Charles W. Weston
Lawrence Alan Peacock
Willis Thornsberry
Assignee (at issue)
Freeport-McMoRan Resource Partners, Limited Partnership
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.