Granted Patent
Utility
US 5,026,416 · App. 07/023,614
Liquid crop stimulant
Inventor:
William Alexander
Patented Case
View Patent ↗
Granted: Jun 25, 1991
Filed: Mar 9, 1987
Inventor
William Alexander
Assignee (at issue)
American Colloid Company
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.